Monday, November 9, 2009

Instalasi Squid Proxy Server dan SARG di Ubuntu

Install Squid Proxy Server

$sudo apt-get update
$sudo apt-get install squid
Backup File squid.conf terlebih dahulu
$sudo cp /etc/squid/squid.conf /etc/squid/squid.conf.original
Edit File squid.conf
$sudo nano /etc/squid/squid.conf

# WELCOME TO SQUID 2.7.STABLE3
# ----------------------------
#
# This is the default Squid configuration file. You may wish
# to look at the Squid home page (http://www.squid-cache.org/)
# for the FAQ and other documentation.
#
# The default Squid config file shows what the defaults for
# various options happen to be. If you don't need to change the
# default, you shouldn't uncomment the line. Doing so may cause
# run-time problems. In some cases "none" refers to no default
# setting at all, while in other cases it refers to a valid
# option - the comments for that keyword indicate if this is the
# case.
#


# Configuration options can be included using the "include" directive.
# Include takes a list of files to include. Quoting and wildcards is
# supported.
#
# For example,
#
# include /path/to/included/file/squid.acl.config
#
# Includes can be nested up to a hard-coded depth of 16 levels.
# This arbitrary restriction is to prevent recursive include references
# from causing Squid entering an infinite loop whilst trying to load
# configuration files.


# # General Setup
# General options, these should all be left as-is (except the hostname) unless you know what you are doing.
http_port 8080 #port yang digunakan untuk squid
icp_port 3130
htcp_port 4827
visible_hostname syahroni-desktop #Replace "server_hostname" with the hostname of your Ubuntu machine

cache_mem 16 MB
refresh_pattern . 0 20% 8640
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY

# snews 563
# gopher 70
# wais 210

#acl www_ports src 80 443
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
access_log /var/log/squid/access.log squid
hosts_file /etc/hosts
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl ftp_ports src 21
acl localhost src 127.0.0.1/32
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl CONNECT method CONNECT
acl PURGE method PURGE

acl badsites dstdomain "/usr/local/etc/restricted-sites.squid"
acl goodsites dstdomain "/usr/local/etc/allowed-sites.squid"




### added by squish (begin)
# acl's for squish - autodetected, sometimes
# acl SQUISHLOC dst syahroni-desktop
# acl SQUISHED1 proxy_auth -i "/etc/squid/squished"
# acl SQUISHED2 ident "/etc/squid/squished"
# acl SQUISHED3 src "/etc/squid/squished"
# Error info that says you're squished
deny_info http://syahroni-desktop/squish/?squished& SQUISHED1
# deny_info http://syahroni-desktop/squish/?squished& SQUISHED2
deny_info http://syahroni-desktop/squish/?squished& SQUISHED3
# HTTP access controls for squish
# http_access allow SQUISHLOC
# http_access allow password !SQUISHED1
# http_access deny SQUISHED1
# http_access deny SQUISHED2
# http_access deny SQUISHED3
### added by squish (end)

http_access allow goodsites
http_access deny badsites


http_access allow manager localhost
http_access deny manager
http_access allow PURGE localhost
http_access deny PURGE

# HTTP Access
# Allows access to HTTP(S) webpages. Comment these lines out if you don't want to allow access to HTTP(S) webpages.
acl wwwusers src 0.0.0.0/0.0.0.0
http_access allow all

# FTP Access
# Allows FTP Access, comment these lines out if you don't want to allow FTP Access
#ftp_user Squid@domain1.com
#ftp_passive off
#acl ftpusers src 0.0.0.0/0.0.0.0
#http_access allow ftpusers ftp_ports

# Deny All Statements
# These are here mostly for reference, but you may want to use them depending on your setup.
# If you don't know what these are, leave them alone.
#never_direct allow all
#always_direct deny all
#http_access deny all
#icp_access allow all
#miss_access allow al
http_reply_access allow all

Buat Structure Cache Directory
$sudo squid -z
Test Squid
$sudo squid -d 1 -D
Menjalankan Squid
$sudo squid -sYD





Install SARG (Squid Analisys Report Generator)

Sebelum menginstall SARG anda diharuskan menginstall apache terlebih dahulu
$sudo apt-get install apache2 sarg
Edit file sarg.conf dan pastikan ada baris ini
access_log /var/log/squid/access.log

$sudo nano /etc/squid/sarg.conf
Jalankan sarg
$sudo sarg

SARG dapat diakses di http://ipaddresskomputeranda/squid-reports

Friday, November 6, 2009

Bridging Network Connection di Ubuntu

Bridging Network Connection di Ubuntu


1.Install bridge-utils ,
$ sudo apt-get update ; sudo apt-get install bridge-utils
2.Sekarang waktunya Setting Bridging, disini diasumsikan saya mempunyai interface “eth0” dan nama untuk bridgingnya adalah mybridge
$ sudo ifconfig eth0 0.0.0.0
$ sudo brctl addbr mybridge
$ sudo addif mybridge eth0
$ sudo ifconfig mybridge up
3.Setelah itu anda perlu setting Bridge pada saat startup
Edit file /etc/network/interfaces
$ sudo nano /etc/network/interfaces

auto lo
iface lo inet loopback

#bridge
iface mybridge inet static
address 10.1.99.205
netmask 255.255.255.0
network 10.1.99.0
gateway 10.1.99.11
dns-nameservers 10.1.99.2
preup ifconfig eth0 down
pre-up brctl addbr mybridge
pre-up brctl addif mybridge eth0
pre-up ifconfig eth0 0.0.0.0
post-down ifconfig eth0 down
post-down ifconfig mybridge down
post-down brctl delif mybridge eth0
post-down brctl delbr mybridge



Tekan Ctrl + O untuk menyimpan, Ctrl + X untuk keluar dari editor.
Restart networking
$ sudo /etc/init.d/networking restart
$ sudo shutdown -r now

Thursday, July 9, 2009

Winmail.dat Cannot Open in Thunderbird

Winmail.dat, sebuah attachment yang terlampir jika anda menerima kiriman email dari pemakai outlook.
Jika anda ingin membukanya lakukan langkah berikut

1.download addons thunderbird pada link berikut
https://addons.mozilla.org/en-US/thunderbird/addon/4433
2.Jika sudah Buka thunderbird anda,Klik Tools, Addons
3.Klik install buttons, kemudian pilih file yang anda download tadi
4.Klik Install
5.Restart Thundrbird anda

Setelah addons ini terpasang, anda dipastikan sudah bisa menerima attachment yang terlampir dalam file winmail.dat

Selamat Mencoba

Tuesday, June 30, 2009

APT Ho To Part 8

APT HOWTO
Chapter 8 - What distributions support APT?

Here are the names of some of the distributions that use APT:

Debian GNU/Linux (http://www.debian.org) - it was for this distribution that APT was developed

Conectiva (http://www.conectiva.com.br) - this was the first distribution to port APT for use with rpm

Libranet (http://www.libranet.com)

Mandrake (http://www.mandrake.com)

PLD (http://www.pld.org.pl)

Vine (http://www.vinelinux.org)

APT4RPM (http://apt4rpm.sf.net)

Alt Linux (http://www.altlinux.ru/)

Red Hat (http://www.redhat.com/)

Sun Solaris (http://www.sun.com/)

SuSE (http://www.suse.de/)

Yellow Dog Linux (http://www.yellowdoglinux.com/)

Install HP Laserjet P1006, P1505, 1020

Download and Install

Click the link, or cut and paste the whole command line below to download the driver.

$ wget -O foo2zjs.tar.gz http://foo2zjs.rkkda.com/foo2zjs.tar.gz

Now unpack it:

Unpack:
$ tar zxf foo2zjs.tar.gz
$ cd foo2zjs

Now compile and install it. The INSTALL file contains more detailed instructions; please read it now.

Compile:
$ make

Get extra files from the web, such as .ICM profiles for color correction,
and firmware. Select the model number for your printer:
$ ./getweb P1005 # Get HP LaserJet P1005 firmware file
$ ./getweb P1006 # Get HP LaserJet P1006 firmware file
$ ./getweb P1007 # Get HP LaserJet P1007 firmware file
$ ./getweb P1008 # Get HP LaserJet P1008 firmware file
$ ./getweb P1505 # Get HP LaserJet P1505 firmware file
$ ./getweb 1020 # Get HP Laserjet 1020 firmware file

Install driver, foomatic XML files, and extra files:
$ su OR $ sudo make install
# make install

(Optional) Configure hotplug (USB; HP LJ P1005/P1006/P1007/P1008/P1505):
# make install-hotplug OR $ sudo make install-hotplug

(Optional) If you use CUPS, restart the spooler:
# make cups OR $ sudo make cups

Now create printer entries for your spooler. Create the queues first, then edit them and set the device options as desired. See your operating system documentation for further details on creating a printer queue. Click any hyperlinks below for sample screenshots.

For Redhat 7.2/7.3/8.0/9.0 and Fedora Core 1-5 users:

# printconf-gui

For Fedora Core 6, Fedora 7/8/9/10, and Ubuntu 7.10/8.x users:

# system-config-printer

For Mandrake/Manrivia users:

# printerdrake

For SUSE 10.x/11.x users:

# yast2 printer

For Ubuntu 5.10/6.06/6.10/7.04 users:

$ sudo gnome-cups-manager
$ sudo make cups # IMPORTANT: gnome-cups-manager has a BUG in it

For low level testing, you can also create a "raw queue", which will accept "XQX" stream files as-is and send them directly to the printer.

Questions and Support

If you installed as per the above instructions, then click on our forums for questions and support.

If you installed a THIRD PARTY (e.g. Ubuntu, Gentoo, etc.) foo2zjs package, then read the INSTALL file and follow the directions. No third party support is given. You MUST install using the above procedure.

History

It uses Markus Kuhn's JBIG-KIT compression library (included), and Marti Maria's icc2ps program (included).

Resources

* www.worldlabel.com - Worldlabel.Com: A Brand Name in Laser Labels & Inkjet Labels

* www.linuxprinting.org - Home of foomatic
* ZjStream Reference - Overview of ZjS data format
* MacOSX INSTALL.osx - Directions for Mac OSX
* Printing booklets - ... with PSUTILS -- support for creep (shingling)

* Argyll Color Management System - Argyll is an open source, ICC compatible color management system

* eBay: fotojimbo - Possible source for buying a custom .ICM color profile ($10)
* eBay: The-Graphics-Depot - Possible source for buying a custom .ICM color profile (10 Pounds)
* ICCFactory - Possible source for buying a custom .ICM color profile ($25)
* Dry Creek Photo - Possible source for buying a custom .ICM color profile ($50)
* ColorValet - Possible source for buying a custom .ICM color profile ($100)
* The Digital Dog - Possible source for buying a custom .ICM color profile ($100)

* freecolormanagement.com - CMS Links
* www.aim-dtp.net/index.htm - Accurate Image Manipulation for Desktop Publishing
* http://www.color.org/ - The International Color Consortium
* Gernot Hoffmann - Color printer test pages

APT How To Part 6

APT HOWTO
Chapter 7 - How to deal with errors
7.1 Common errors

Errors will always happen, many of them caused by users not paying attention. The following is a list of some of the most frequently reported errors and how to deal with them.

If you receive a message that looks like the one below when trying to run apt-get install package...

Reading Package Lists... Done
Building Dependency Tree... Done
W: Couldn't stat source package list 'http://people.debian.org unstable/ Packages' (/var/state/apt/lists/people.debian.org_%7ekov_debian_unstable_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these missing files
E: Couldn't find package penguineyes

you forgot to run apt-get update after your last change to the /etc/apt/sources.list file.

If the error looked like:

E: Could not open lock file /var/lib/dpkg/lock - open (13 Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

when trying any apt-get method other than source, you don't have root permission, that is, you're running as a normal user.

There's an error similar to the above which happens when you run two copies of apt-get at the same time, or even if you try to run apt-get while a dpkg process is active. The only method that can be used simultaneously with others is the source method.

If an installation breaks in the middle of the process and you find that it's no longer possible to install or remove packages, try running these two commands:

# apt-get -f install
# dpkg --configure -a

And then try again. It may be necessary to run the second of the above commands more than once. This is an important lesson for those adventurers who use `unstable'.

If you receive the error "E: Dynamic MMap ran out of room" when running apt-get update, add the following line to /etc/apt/apt.conf:

APT::Cache-Limit 10000000;

7.2 Where can I find help?

If you find yourself plagued by doubts, consult the extensive documentation available for the Debian packaging system. --help's and manpages can be an enormous help to you, as can the documentation contained in the /usr/share/doc directories such as /usr/share/doc/apt.

If this documentation fails to drive your fears away, try looking for the answer on the Debian mailing lists. You can find more information about specific user lists on the Debian website: http://www.debian.org.

Remember that these lists and resources should be used only by Debian users; users of other systems will find better support from the community resources of their own distributions.

APT How To Part 5

APT HOWTO
Chapter 6 - Working with source packages
6.1 Downloading source packages

It's common in the world of free software to study source code or even make corrections to buggy code. To do this, you would need to download the source of the program. The APT system provides an easy way to obtain source code to the many programs contained in the distribution, including all the files needed to create a .deb for the program.

Another common use of Debian sources is to adapt a more recent version of a program, from the unstable distribution, for example, for use with the stable distribution. Compiling a package against stable will generate .debs with dependencies adjusted to match the packages available in this distribution.

To accomplish this, the deb-src entry in your /etc/apt/sources.list should be pointed at unstable. It should also be enabled (uncommented). See section The /etc/apt/sources.list file, Section 2.1.

To download a source package, you would use the following command:

$ apt-get source packagename

This will download three files: a .orig.tar.gz, a .dsc and a .diff.gz. In the case of packages made specifically for Debian, the last of these is not downloaded and the first usually won't have "orig" in the name.

The .dsc file is used by dpkg-source for unpacking the source package into the directory packagename-version. Within each downloaded source package there is a debian/ directory that contains the files needed for creating the .deb package.

To auto-build the package when it's been downloaded, just add -b to the command line, like this:

$ apt-get -b source packagename

If you decide not to create the .deb at the time of the download, you can create it later by running:

$ dpkg-buildpackage -rfakeroot -uc -b

from within the directory that was created for the package after downloading. To install the package built by the commands above one must use the package manager directly, like this:

# dpkg -i file.deb

There's a difference between apt-get's source method and its other methods. The source method can be used by normal users, without needing special root powers. The files are downloaded to the directory from which the apt-get source package command was called.
6.2 Packages needed for compiling a source package

Normally, specific headers and shared libraries need to be present in order for a source package to be compiled. All source packages have a field in their control files called 'Build-Depends:' that indicates which additional packages are needed for the package to be built from source.

APT has a simple way of downloading these packages. Just run apt-get build-dep package, where `package' is the name of the package you're going to build. For example:

# apt-get build-dep gmc
Reading Package Lists... Done
Building Dependency Tree... Done
The following NEW packages will be installed:
comerr-dev e2fslibs-dev gdk-imlib-dev imlib-progs libgnome-dev libgnorba-dev
libgpmg1-dev
0 packages upgraded, 7 newly installed, 0 to remove and 1 not upgraded.
Need to get 1069kB of archives. After unpacking 3514kB will be used.
Do you want to continue? [Y/n]

The packages that will be installed are the packages needed in order for gmc to be built correctly. It's important to note that this command doesn't look for the source package of the program to be compiled. You will therefore need to run apt-get source separately to get it.

If all you want is checking what packages are needed to build a given package, there's a variant of the apt-cache show command (see Getting information about packages., Chapter 5, which will show, among other informations, the Build-Depends line that lists those information, the Build-Depends line that lists those

# apt-cache showsrc package

APT How To Part 4

APT HOWTO
Chapter 5 - Getting information about packages.

There are some front-end programs for the APT system that make it significantly easier to get listings of packages that are available for installation or are already installed, as well as to find out what section a package is in, what its priority is, what its description is, etc.

But... our goal here is to learn how to use pure APT. So how can you find out the name of a package that you want to install?

We have a number of resources for such a task. We'll begin with apt-cache. This program is used by the APT system for maintaining its database. We'll take just a brief look at some of its more practical applications.
5.1 Discovering package names

For example, suppose that you want to reminisce about the good old days of the Atari 2600. You want to use APT to install an Atari emulator, and then download some games. You can do:

# apt-cache search atari
atari-fdisk-cross - Partition editor for Atari (running on non-Atari)
circuslinux - The clowns are trying to pop balloons to score points!
madbomber - A Kaboom! clone
tcs - Character set translator.
atari800 - Atari emulator for svgalib/X/curses
stella - Atari 2600 Emulator for X windows
xmess-x - X binaries for Multi-Emulator Super System

We find several packages related to what we're looking for, together with brief descriptions. To get more information about a specific package, I can then use:

# apt-cache show stella
Package: stella
Priority: extra
Section: non-free/otherosfs
Installed-Size: 830
Maintainer: Tom Lear
Architecture: i386
Version: 1.1-2
Depends: libc6 (>= 2.1), libstdc++2.10, xlib6g (>= 3.3.5-1)
Filename: dists/potato/non-free/binary-i386/otherosfs/stella_1.1-2.deb
Size: 483430
MD5sum: 11b3e86a41a60fa1c4b334dd96c1d4b5
Description: Atari 2600 Emulator for X windows
Stella is a portable emulator of the old Atari 2600 video-game console
written in C++. You can play most Atari 2600 games with it. The latest
news, code and binaries for Stella can be found at:
http://www4.ncsu.edu/~bwmott/2600

In this output you have many details about the package that you want (or don't want) to install, together with the full description of the package. If the package is already installed on your system and there is a newer version, you'll see information about both versions. For example:

# apt-cache show lilo
Package: lilo
Priority: important
Section: base
Installed-Size: 271
Maintainer: Russell Coker
Architecture: i386
Version: 1:21.7-3
Depends: libc6 (>= 2.2.1-2), debconf (>=0.2.26), logrotate
Suggests: lilo-doc
Conflicts: manpages (<<1.29-3)
Filename: pool/main/l/lilo/lilo_21.7-3_i386.deb
Size: 143052
MD5sum: 63fe29b5317fe34ed8ec3ae955f8270e
Description: LInux LOader - The Classic OS loader can load Linux and others
This Package contains lilo (the installer) and boot-record-images to
install Linux, OS/2, DOS and generic Boot Sectors of other OSes.
.
You can use Lilo to manage your Master Boot Record (with a simple text screen)
or call Lilo from other Boot-Loaders to jump-start the Linux kernel.

Package: lilo
Status: install ok installed
Priority: important
Section: base
Installed-Size: 190
Maintainer: Vincent Renardias
Version: 1:21.4.3-2
Depends: libc6 (>= 2.1.2)
Recommends: mbr
Suggests: lilo-doc
Description: LInux LOader - The Classic OS loader can load Linux and others
This Package contains lilo (the installer) and boot-record-images to
install Linux, OS/2, DOS and generic Boot Sectors of other OSes.
.
You can use Lilo to manage your Master Boot Record (with a simple text screen)
or call Lilo from other Boot-Loaders to jump-start the Linux kernel.

Note that the first in the list is the available package and the second is the one already installed. For more general information about a package, you can use:

# apt-cache showpkg penguin-command
Package: penguin-command
Versions:
1.4.5-1(/var/lib/apt/lists/download.sourceforge.net_debian_dists_unstable_main_binary-i386_Packages)(/var/lib/dpkg/status)

Reverse Depends:
Dependencies:
1.4.5-1 - libc6 (2 2.2.1-2) libpng2 (0 (null)) libsdl-mixer1.1 (2 1.1.0) libsdl1.1 (0 (null)) zlib1g (2 1:1.1.3)
Provides:
1.4.5-1 -
Reverse Provides:

And to just find out what packages it depends on:

# apt-cache depends penguin-command
penguin-command
Depends: libc6
Depends: libpng2
Depends: libsdl-mixer1.1
Depends: libsdl1.1
Depends: zlib1g

In summary, we have a range of weapons we can use to find out the name of a package we want.
5.2 Using dpkg to find package names

One of the ways to locate the name of a package is to know the name of an important file found within the package. For example, to find the package that provides a particular ".h" file you need for compilation you can run:

# dpkg -S stdio.h
libc6-dev: /usr/include/stdio.h
libc6-dev: /usr/include/bits/stdio.h
perl: /usr/lib/perl/5.6.0/CORE/nostdio.h

or:

# dpkg -S /usr/include/stdio.h
libc6-dev: /usr/include/stdio.h

To find out the names of packages installed on your system, which is useful, for example, if you plan to clean up your hard drive, you can run:

# dpkg -l | grep mozilla
ii mozilla-browse 0.9.6-7 Mozilla Web Browser

The problem with this command is that it can "break" the package name. In the example above, the full name of the package is mozilla-browser. To fix this, you can use the COLUMNS environment variable this way:

[kov]@[couve] $ COLUMNS=132 dpkg -l | grep mozilla
ii mozilla-browser 0.9.6-7 Mozilla Web Browser - core and browser

or the description or part of it this way:

# apt-cache search "Mozilla Web Browser"
mozilla-browser - Mozilla Web Browser

5.3 How to install packages "on demand"

You're compiling a program and, all of a sudden, boom! There's an error because it needs a .h file you don't have. The program auto-apt can save you from such scenarios. It asks you to install packages if they're needed, stopping the relevant process and continuing once the package is installed.

What you do, basically, is run:

# auto-apt run command

Where `command' is the command to be executed that may need some unavailable file. For example:

# auto-apt run ./configure

It will then ask to install the needed packages and call apt-get automatically. If you're running X, a graphical interface will replace the default text interface.

Auto-apt keeps databases which need to be kept up-to-date in order for it to be effective. This is achieved by calling the commands auto-apt update, auto-apt updatedb and auto-apt update-local.
5.4 How to discover to which package a file belongs

If you want to install a package, and you can't find out what it is called by searching with apt-cache, but know the filename of the program itself, or some other filename that belongs to the package, then you can use apt-file to find the package name. This is done like this:

$ apt-file search filename

It works just like dpkg -S, but will also show you uninstalled packages that contain the file. It could also be used to find what packages contain necessary include files that are missing when compiling programs, although auto-apt is a much better method of solving such issues, see How to install packages "on demand", Section 5.3.

You can also list the contents of a package, by running:

$ apt-file list packagename

apt-file keeps a database of which files all packages contain, just like auto-apt does and it needs to be up-to-date. This is done by running:

# apt-file update

By default, apt-file uses the same database auto-apt is using, see How to install packages "on demand", Section 5.3.
5.5 How to keep informed about the changes in the packages.

Every package installs in its documentation directory (/usr/share/doc/packagename) a file called changelog.Debian.gz which contains the list of changes made to the package since the last version. You can read these files with zless' help, for example, but it is something not so easy, after an complete system upgrade, to start searching changelogs for every upgraded package.

There's a way to automatize this task by means of a tool called apt-listchanges. To begin with one needs to install the apt-listchanges package. During the package installation, Debconf will configure it. Some questions may not be shown to you depending on the priority you set up Debconf to use. Answer to the questions as you want.

The first question asks how you want the changes to be showed by apt-listchanges. You can have them mailed to you, which is good for automatic upgrades, or you can ask them in a pager like less, so you can inspect the changes before leting the upgrade continue. If you don't want apt-listchanges running automaticaly during upgrades you can answer none.

After apt-listchanges is installed, as soon as packages are downloaded (or gotten from a CD or mounted disk) by apt it will show the lists of changes made to those packages before installing them.

APT How To Part 3

APT HOWTO
Chapter 4 - Very useful helpers
4.1 How to install locally compiled packages: equivs

Sometimes, people want to use a specific version of a program available only on source code, with no Debian package. But the packaging system can be a trouble when doing this. Suppose you want to compile a new version of your email server. All is fine, but many packages in Debian depend on an MTA (Mail Transport Agent). Since you installed something you compiled by yourself, the packaging system doesn't know about it.

That's where equivs enters the scene. To use it, install the package with that name. Equivs creates an empty package that fullfills dependencies, making the package system believe that the dependencies are satisfied.

Before we begin, it is good to remind you that there are safer ways of compiling a program which is already packaged for Debian with different options, and that one should not use equivs to replace dependencies if you don't know what you are doing. See section Working with source packages, Chapter 6 for more information.

Let's continue with the MTA example, you just installed your new compiled postfix and goes on for installing mutt. Suddenly you discover that mutt wants to install another MTA. But you already have yours.

Go to some directory (/tmp, for example) and run:

# equivs-control name

Replace name for the name of the control file you want to create. The file will be created as follows:

Section: misc
Priority: optional
Standards-Version: 3.0.1

Package:
Version:
Maintainer:
Pre-Depends:
Depends:
Recommends:
Suggests:
Provides: <(virtual)package>
Architecture: all
Copyright:
Changelog:
Readme:
Extra-Files:
Description:
long description and info
.
second paragraph

We just need modify this to do what we want. Have a look at the field's format and to their descriptions, there's no need to explain each one here, let's do what's required:

Section: misc
Priority: optional
Standards-Version: 3.0.1

Package: mta-local
Provides: mail-transport-agent

Yes, that's all. mutt depends on mail-transport-agent, that is a virtual package provided by all MTAs, I could simply name the package mail-transport-agent, but I preferred to use the virtual package's schema, using Provides.

Now you only need to build the package:

# equivs-build name
dh_testdir
touch build-stamp
dh_testdir
dh_testroot
dh_clean -k
# Add here commands to install the package into debian/tmp.
touch install-stamp
dh_testdir
dh_testroot
dh_installdocs
dh_installchangelogs
dh_compress
dh_fixperms
dh_installdeb
dh_gencontrol
dh_md5sums
dh_builddeb
dpkg-deb: building package `name' in `../name_1.0_all.deb'.

The package has been created.
Attention, the package has been created in the current directory,

And install the resulting .deb.

As one can see, there are several uses for equivs. One can even crate a my-favorites package, which depends on the programs you usually installs, for example. Just free your imagination, but be careful.

It is important to note that there are example control files in /usr/share/doc/equivs/examples. Check them out.
4.2 Removing unused locale files: localepurge

Many Debian users use only one locale. A Brazilian Debian user, for example, usually uses the pt_BR locale all the time and doesn't care about the es one.

localepurge is a very useful tool for these users. You can free lots of space by having only the locales that you really use. Just apt-get install localepurge.

It is very easy to configure it, debconf questions guide the user in a step-by-step configuration. Be very careful on answering the first question though, wrong answers may remove all the locales files, even the ones you use. The only way to recover these files is reinstalling all the packages that provide them.
4.3 How to know what packages may be upgraded

apt-show-versions is a program that shows what packages in the system may be updated and several useful information. The -u option displays a list of upgradeable packages:

$ apt-show-versions -u
libeel0/unstable upgradeable from 1.0.2-5 to 1.0.2-7
libeel-data/unstable upgradeable from 1.0.2-5 to 1.0.2-7

APT How To Part 2


APT HOWTO
Chapter 3 - Managing packages
3.1 Updating the list of available packages

The packaging system uses a private database to keep track of which packages are installed, which are not installed and which are available for installation. The apt-get program uses this database to find out how to install packages requested by the user and to find out which additional packages are needed in order for a selected package to work properly.

To update this list, you would use the command apt-get update. This command looks for the package lists in the archives found in /etc/apt/sources.list; see The /etc/apt/sources.list file, Section 2.1 for more information about this file.

It's a good idea to run this command regularly to keep yourself and your system informed about possible package updates, particularly security updates.
3.2 Installing packages

Finally, the process you've all been waiting for! With your sources.list ready and your list of available packages up to date, all you have to do is run apt-get to get your desired package installed. For example, you can run:

# apt-get install xchat

APT will search it's database for the most recent version of this package and will retrieve it from the corresponding archive as specified in sources.list. In the event that this package depends on another -- as is the case here -- APT will check the dependencies and install the needed packages. See this example:

# apt-get install nautilus
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
bonobo libmedusa0 libnautilus0
The following NEW packages will be installed:
bonobo libmedusa0 libnautilus0 nautilus
0 packages upgraded, 4 newly installed, 0 to remove and 1 not upgraded.
Need to get 8329kB of archives. After unpacking 17.2MB will be used.
Do you want to continue? [Y/n]

The package nautilus depends on the shared libraries cited, therefore APT will get them from the archive. If you had specified the names of these libraries on the apt-get command line, APT would not have asked if you wanted to continue; it would automatically accept that you wanted to install all of those packages.

This means that APT only asks for confirmation when it needs to install packages which weren't specified on the command line.

The following options to apt-get may be useful:

-h This help text.
-d Download only - do NOT install or unpack archives
-f Attempt to continue if the integrity check fails
-s No-act. Perform ordering simulation
-y Assume Yes to all queries and do not prompt
-u Show a list of upgraded packages as well

Multiple packages may be selected for installation in one line. Files downloaded from the network are placed in the directory /var/cache/apt/archives for later installation.

You can specify packages to be removed on the same command line, as well. Just put a '-' immediately after the name of the package to be removed, like this:

# apt-get install nautilus gnome-panel-
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
bonobo libmedusa0 libnautilus0
The following packages will be REMOVED:
gnome-applets gnome-panel gnome-panel-data gnome-session
The following NEW packages will be installed:
bonobo libmedusa0 libnautilus0 nautilus
0 packages upgraded, 4 newly installed, 4 to remove and 1 not upgraded.
Need to get 8329kB of archives. After unpacking 2594kB will be used.
Do you want to continue? [Y/n]

See section Removing packages, Section 3.3 for more details on package removal.

If you somehow damage an installed package, or simply want the files of a package to be reinstalled with the newest version that is available, you can use the --reinstall option like so:

# apt-get --reinstall install gdm
Reading Package Lists... Done
Building Dependency Tree... Done
0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 1 not upgraded.
Need to get 0B/182kB of archives. After unpacking 0B will be used.
Do you want to continue? [Y/n]

3.3 Removing packages

If you no longer want to use a package, you can remove it from your system using APT. To do this just type: apt-get remove package. For example:

# apt-get remove gnome-panel
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages will be REMOVED:
gnome-applets gnome-panel gnome-panel-data gnome-session
0 packages upgraded, 0 newly installed, 4 to remove and 1 not upgraded.
Need to get 0B of archives. After unpacking 14.6MB will be freed.
Do you want to continue? [Y/n]

As you can see in the above example, APT also takes care of removing packages which depend on the package you have asked to remove. There is no way to remove a package using APT without also removing those packages that depend on it.

Running apt-get as above will cause the packages to be removed but their configuration files, if any, will remain intact on the system. For a complete removal of the package, run:

# apt-get --purge remove gnome-panel
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages will be REMOVED:
gnome-applets* gnome-panel* gnome-panel-data* gnome-session*
0 packages upgraded, 0 newly installed, 4 to remove and 1 not upgraded.
Need to get 0B of archives. After unpacking 14.6MB will be freed.
Do you want to continue? [Y/n]

Note the '*' after the names. This indicates that the configuration files for each of these packages will also be removed.

Just as in the case of the install method, you can use a symbol with remove to invert the meaning for a particular package. In the case of removing, if you add a '+' right after the package name, the package will be installed instead of being removed.

# apt-get --purge remove gnome-panel nautilus+
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
bonobo libmedusa0 libnautilus0 nautilus
The following packages will be REMOVED:
gnome-applets* gnome-panel* gnome-panel-data* gnome-session*
The following NEW packages will be installed:
bonobo libmedusa0 libnautilus0 nautilus
0 packages upgraded, 4 newly installed, 4 to remove and 1 not upgraded.
Need to get 8329kB of archives. After unpacking 2594kB will be used.
Do you want to continue? [Y/n]

Note that apt-get lists the extra packages which will be installed (that is, the packages whose installation is needed for the proper functioning of the package whose installation has been requested), those which will be removed, and those which will be installed (including the extra packages again).
3.4 Upgrading packages

Package upgrades are a great success of the APT system. They can be achieved with a single command: apt-get upgrade. You can use this command to upgrade packages within the same distribution, as well as to upgrade to a new distribution, although for the latter the command apt-get dist-upgrade is preferred; see section Upgrading to a new release, Section 3.5 for more details.

It's useful to run this command with the -u option. This option causes APT to show the complete list of packages which will be upgraded. Without it, you'll be upgrading blindly. APT will download the latest versions of each package and will install them in the proper order. It's important to always run apt-get update before you try this. See section Updating the list of available packages, Section 3.1. Look at this example:

# apt-get -u upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages have been kept back
cpp gcc lilo
The following packages will be upgraded
adduser ae apt autoconf debhelper dpkg-dev esound esound-common ftp indent
ipchains isapnptools libaudiofile-dev libaudiofile0 libesd0 libesd0-dev
libgtk1.2 libgtk1.2-dev liblockfile1 libnewt0 liborbit-dev liborbit0
libstdc++2.10-glibc2.2 libtiff3g libtiff3g-dev modconf orbit procps psmisc
29 packages upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 5055B/5055kB of archives. After unpacking 1161kB will be used.
Do you want to continue? [Y/n]

The process is very simple. Note that in the first few lines, apt-get says that some packages were kept back. This means that there are new versions of these packages which will not be installed for some reason. Possible reasons are broken dependencies (a package on which it depends doesn't have a version available for download) or new dependencies (the package has come to depend on new packages since the last version).

There's no clean solution for this first case. For the second case, it's sufficient to run apt-get install for the specific package in question, as this will download the dependencies. An even cleaner solution is to use dist-upgrade. See section Upgrading to a new release, Section 3.5.
3.5 Upgrading to a new release

This feature of APT allows you to upgrade an entire Debian system at once, either through the Internet or from a new CD (purchased or downloaded as an ISO image).

It is also used when changes are made to the relationships between installed packages. With apt-get upgrade, these packages would be kept untouched (kept back).

For example, suppose that you're using revision 0 of the stable version of Debian and you buy a CD with revision 3. You can use APT to upgrade your system from this new CD. To do this, use apt-cdrom (see section Adding a CD-ROM to the sources.list file, Section 2.4) to add the CD to your /etc/apt/sources.list and run apt-get dist-upgrade.

It's important to note that APT always looks for the most recent versions of packages. Therefore, if your /etc/apt/sources.list were to list an archive that had a more recent version of a package than the version on the CD, APT would download the package from there.

In the example shown in section Upgrading packages, Section 3.4, we saw that some packages were kept back. We'll solve this problem now with the dist-upgrade method:

# apt-get -u dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Done
The following NEW packages will be installed:
cpp-2.95 cron exim gcc-2.95 libident libopenldap-runtime libopenldap1
libpcre2 logrotate mailx
The following packages have been kept back
lilo
The following packages will be upgraded
adduser ae apt autoconf cpp debhelper dpkg-dev esound esound-common ftp gcc
indent ipchains isapnptools libaudiofile-dev libaudiofile0 libesd0
libesd0-dev libgtk1.2 libgtk1.2-dev liblockfile1 libnewt0 liborbit-dev
liborbit0 libstdc++2.10-glibc2.2 libtiff3g libtiff3g-dev modconf orbit
procps psmisc
31 packages upgraded, 10 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B/7098kB of archives. After unpacking 3118kB will be used.
Do you want to continue? [Y/n]

Note now that the packages will be upgraded, and new packages will also be installed (the new dependencies of the packages). Note too that lilo is still being kept back. It probably has a more serious problem than a new dependency. We can find out by running:

# apt-get -u install lilo
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
cron debconf exim libident libopenldap-runtime libopenldap1 libpcre2
logrotate mailx
The following packages will be REMOVED:
debconf-tiny
The following NEW packages will be installed:
cron debconf exim libident libopenldap-runtime libopenldap1 libpcre2
logrotate mailx
The following packages will be upgraded
lilo
1 packages upgraded, 9 newly installed, 1 to remove and 31 not upgraded.
Need to get 225kB/1179kB of archives. After unpacking 2659kB will be used.
Do you want to continue? [Y/n]

As noted in the above, lilo has a new conflict with the package debconf-tiny, which means it couldn't be installed (or upgraded) without removing debconf-tiny.

To know what's keeping or removing a package you may use:

# apt-get -o Debug::pkgProblemResolver=yes dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Starting
Starting 2
Investigating python1.5
Package python1.5 has broken dep on python1.5-base
Considering python1.5-base 0 as a solution to python1.5 0
Holding Back python1.5 rather than change python1.5-base
Investigating python1.5-dev
Package python1.5-dev has broken dep on python1.5
Considering python1.5 0 as a solution to python1.5-dev 0
Holding Back python1.5-dev rather than change python1.5
Try to Re-Instate python1.5-dev
Done
Done
The following packages have been kept back
gs python1.5-dev
0 packages upgraded, 0 newly installed, 0 to remove and 2 not upgraded.

This way, it's easy to notice that the python1.5-dev package cannot be installed because of an unsatisfied dependency: python1.5.
3.6 Removing unused package files: apt-get clean and autoclean

When you install a package APT retrieves the needed files from the hosts listed in /etc/apt/sources.list, stores them in a local repository (/var/cache/apt/archives/), and then proceeds with installation, see Installing packages, Section 3.2.

In time the local repository can grow and occupy a lot of disk space. Fortunately, APT provides tools for managing its local repository: apt-get's clean and autoclean methods.

apt-get clean removes everything except lock files from /var/cache/apt/archives/ and /var/cache/apt/archives/partial/. Thus, if you need to reinstall a package APT should retrieve it again.

apt-get autoclean removes only package files that can no longer be downloaded.

The following example show how apt-get autoclean works:

# ls /var/cache/apt/archives/logrotate* /var/cache/apt/archives/gpm*
logrotate_3.5.9-7_i386.deb
logrotate_3.5.9-8_i386.deb
gpm_1.19.6-11_i386.deb

In /var/cache/apt/archives there are two files for the package logrotate and one for the package gpm.

# apt-show-versions -p logrotate
logrotate/stable uptodate 3.5.9-8
# apt-show-versions -p gpm
gpm/stable upgradeable from 1.19.6-11 to 1.19.6-12

apt-show-versions shows that logrotate_3.5.9-8_i386.deb provides the up to date version of logrotate, so logrotate_3.5.9-7_i386.deb is useless. Also gpm_1.19.6-11_i386.deb is useless because a more recent version of the package can be retrieved.

# apt-get autoclean
Reading Package Lists... Done
Building Dependency Tree... Done
Del gpm 1.19.6-11 [145kB]
Del logrotate 3.5.9-7 [26.5kB]

Finally, apt-get autoclean removes only the old files. See How to upgrade packages from specific versions of Debian, Section 3.9 for more information on apt-show-versions.
3.7 Using APT with dselect

dselect is a program that helps users select Debian packages for installation. It's considered somewhat complicated and rather boring, but with practice you can get the hang of its console-based ncurses interface.

One feature of dselect is that it knows how to make use of the capacity Debian packages have for "recommending" and "suggesting" other packages for installation. To use the program, run `dselect' as root. Choose 'apt' as your access method. This isn't truly necessary, but if you're not using a CD ROM and you want to download packages from the Internet, it's the best way to use dselect.

To gain a better understanding of dselect's usage, read the dselect documentation found on the Debian page http://www.debian.org/doc/ddp.

After making your selections with dselect, use:

# apt-get -u dselect-upgrade

as in the example below:

# apt-get -u dselect-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages will be REMOVED:
lbxproxy
The following NEW packages will be installed:
bonobo console-tools-libs cpp-3.0 enscript expat fingerd gcc-3.0
gcc-3.0-base icepref klogd libdigest-md5-perl libfnlib0 libft-perl
libgc5-dev libgcc300 libhtml-clean-perl libltdl0-dev libsasl-modules
libstdc++3.0 metamail nethack proftpd-doc psfontmgr python-newt talk tidy
util-linux-locales vacation xbill xplanet-images
The following packages will be upgraded
debian-policy
1 packages upgraded, 30 newly installed, 1 to remove and 0 not upgraded.
Need to get 7140kB of archives. After unpacking 16.3MB will be used.
Do you want to continue? [Y/n]

Compare with what we see when running apt-get dist-upgrade on the same system:

# apt-get -u dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Done
The following packages will be upgraded
debian-policy
1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 421kB of archives. After unpacking 25.6kB will be freed.
Do you want to continue? [Y/n]

Note that many of the packages from above are being installed because other packages "suggested" or "recommended" them. Others are being installed or removed (in the case of lbxproxy, for example) per the choices we made while navigating through dselect's package listing. Dselect can be a powerful tool when used in conjunction with APT.
3.8 How to keep a mixed system

People are sometimes interested in using one of the Debian versions as its main system distribution and one or more packages from another branch.

To set up what is your main version of Debian you should edit the /etc/apt/apt.conf (it does not usually exist, create it if you don't have one) to contain the following line:

APT::Default-Release "version";

Where version is the version of Debian you want to use as the main distribution. The versions you can use are stable, testing and unstable. To install packages from another version, then, you must use APT in the following way:

# apt-get -t distribution install package

For that to work, though, you need at least one APT source line in your /etc/apt/sources.list for the distribution you want the package from, and the package must exist on that source.

You can also request a specific version of a package using the following sintax:

# apt-get install package=version

For example, the line below will install version 2.2.4-1 of the nautilus package.:

# apt-get install nautilus=2.2.4-1

IMPORTANT: the `unstable' version of Debian is the version to which the newest versions of Debian packages are uploaded first. This distribution sees all of the changes that packages go through, both small ones and more drastic ones which affect many packages or the whole system. For this reason, this version of the distribution should not be used by inexperienced users or by those who need proven stability.

The `testing' distribution is not necessarily better than `unstable', because it does not receive security updates quickly. For servers and other production systems stable should always be used.
3.9 How to upgrade packages from specific versions of Debian

apt-show-versions provides a safe way for users of mixed distributions to upgrade their systems without getting more of the less-stable distribution than they had in mind. For instance, it is possible to upgrade just your unstable packages by running after having installed the apt-show-versions package:

# apt-get install `apt-show-versions -u -b | grep unstable | cut -d ' ' -f 1`

3.10 How to keep specific versions of packages installed (complex)

You may have occasion to modify something in a package and don't have time or don't want to port those changes to a new version of the program. Or, for instance, you may have just upgraded your Debian distribution to 3.0, but want to continue with the version of a certain package from Debian 2.2. You can "pin" the version you have installed so that it will not be upgraded.

Using this resource is simple. You just need to edit the file /etc/apt/preferences.

The format is simple:

Package:
Pin:
Pin-Priority:

Each entry must be separated from any other entries by a blank line. For example, to keep package sylpheed that I have modified to use "reply-to-list" at version 0.4.99, I add:

Package: sylpheed
Pin: version 0.4.99*

Note that I used an * (asterisk). This is a "wildcard"; it say that I want that this "pin" to be valid for all versions beginning with 0.4.99. This is because Debian versions its packages with a "Debian revision" and I don't want to avoid the installation of these revisions. So, for instance, versions 0.4.99-1 and 0.4.99-10 will be installed as soon as they are made available. Note that if you modified the package you won't want to do things this way.

The pin priority helps determine whether a package matching the "Packages:" and "Pin:" lines will be installed, with higher priorities making it more likely that a matching package will be installed. You can read apt_preferences(7) for a thorough discussion of priorities, but a few examples should give the basic idea. The following describes the effect of setting the priority field to different values in the sylpheed example above.

1001

Sylpheed version 0.4.99 will never be replaced by apt. If available, apt will install version 0.4.99 even if it would replace an installed package with a higher version. Only packages of priority greater than 1000 will ever downgrade an existing package.

1000

The effect is the same as priority 1001, except that apt will refuse to downgrade an installed version to 0.4.99

990

Version 0.4.99 will be replaced only by a higher version available from a release designated as preferred using the "APT::Default-Release" variable (see How to keep a mixed system, Section 3.8, above).

500

Any version higher than 0.4.99 of sylpheed which is available from any release will take preference over version 0.4.99, but 0.4.99 will still be preferred to a lower version.

100

Higher versions of sylpheed available from any release will take preference over version 0.4.99, as will any installed higher version of slypheed; so 0.4.99 will be installed only if no version is installed already. This is the priority of installed packages.

-1

Negative priorities are allowed as well, and prevent 0.4.99 from ever being installed.

A pin can be specified on a package's version, release or origin.

Pinning on a version, as we have seen, supports literal version numbers as well as wildcards to specify several versions at one time.

Option release depends on the Release file from an APT repository or from a CD. This option may be of no use at all if you're using package repositories that don't provide this file. You may see the contents of the Release files that you have on /var/lib/apt/lists/. The parameters for a release are: a (archive), c (components), v (version), o (origin) and l (label).

An example:

Package: *
Pin: release v=2.2*,a=stable,c=main,o=Debian,l=Debian
Pin-Priority: 1001

In this example, we chose version 2.2* of Debian (which can be 2.2r2, 2.2r3 -- this accommodates "point releases" that typically include security fixes and other very important updates), the stable repository, section main (as opposed to contrib or non-free) and origin and label Debian. Origin (o=) defines who produced that Release file, the label (l=) defines the name of the distribution: Debian for Debian itself and Progeny for Progeny, for example. A sample Release file:

$ cat /var/lib/apt/lists/ftp.debian.org.br_debian_dists_potato_main_binary-i386_Release
Archive: stable
Version: 2.2r3
Component: main
Origin: Debian
Label: Debian
Architecture: i386

Install Open Office Org 3.0.1

Archive for the ‘Open Office 3.0 Debian’ Category
Instalasi Open Office 3.0
Thursday, November 20th, 2008
Download paket OpenOffice stable versi 3.0 versi Debian package.
melalui link berikut

http://mirrors.evolva.ro/openoffice.org/stable/3.0.0/OOo_3.0.0_LinuxIntel_install_en-US_deb.tar.gz

Ekstrak file hasil download.
$ tar -xzvf OOo_3.0.0_LinuxIntel_install_en-US_deb.tar.gz
Ganti permission file *.deb agar menjadi executable.
$ cd OOO300_m9_native_packed-1_en-US.9358/DEBS/
$ chmod +x openoffice.org*
Instal seluruh paket *.deb
$ sudo dpkg -i *.deb
Integrasikan OpenOffice agar tampak di pilihan menu aplikasi office.
$ cd desktop-integration/
$ chmod +x openoffice.org3.0-debian-menus_3.0-9354_all.deb
$ sudo dpkg -i openoffice.org3.0-debian-menus_3.0-9354_all.deb
Setelah di-integrasikan akan tampak seperti gambar dibawah ini:

Thursday, June 25, 2009

Lebih Jauh Tentang APT

APT HOWTO
Chapter 2 - Basic Configuration

2.1 The /etc/apt/sources.list file

As part of its operation, APT uses a file that lists the 'sources' from which packages can be obtained. This file is /etc/apt/sources.list.

The entries in this file normally follow this format:

deb http://host/debian distribution section1 section2 section3
deb-src http://host/debian distribution section1 section2 section3
Of course, the above entries are fictitious and should not be used. The first word on each line, deb or deb-src, indicates the type of archive: whether it contains binary packages (deb), that is, the pre-compiled packages that we normally use, or source packages (deb-src), which are the original program sources plus the Debian control file (.dsc) and the diff.gz containing the changes needed for `debianizing' the program.

We usually find the following in the default Debian sources.list:

# See sources.list(5) for more information, especially
# Remember that you can only use http, ftp or file URIs
# CDROMs are managed through the apt-cdrom tool.
deb http://http.us.debian.org/debian stable main contrib non-free
deb http://non-us.debian.org/debian-non-US stable/non-US main contrib non-free
deb http://security.debian.org stable/updates main contrib non-free

# Uncomment if you want the apt-get source function to work
#deb-src http://http.us.debian.org/debian stable main contrib non-free
#deb-src http://non-us.debian.org/debian-non-US stable/non-US main contrib non-free
These are the lines needed by a basic Debian install. The first deb line points to the official archive, the second to the non-US archive and the third to the archive of Debian security updates.

The two last lines are commented out (with a `#' in front), so apt-get will ignore them. These are deb-src lines, that is, they point to Debian source packages. If you often download program sources for testing or recompiling, uncomment them.

The /etc/apt/sources.list file can contain several types of lines. APT knows how to deal with archives of types http, ftp, file (local files, e.g., a directory containing a mounted ISO9660 filesystem) and ssh, that I know of.

Do not forget to run apt-get update after modifying the /etc/apt/sources.list file. You must do this to let APT obtain the package lists from the sources you specified.

2.2 How to use APT locally

Sometimes you have lots of packages .deb that you would like to use APT to install so that the dependencies would be automatically solved.

To do that create a directory and put the .debs you want to index in it . For example:

# mkdir /root/debs
You may modify the definitions set on the package's control file directly for your repository using an override file. Inside this file you may want to define some options to override the ones that come with the package. It looks like follows:

package priority section
package is the name of the package, priority is low, medium or high and section is the section to which it belongs. The file name does not matter, you'll have to pass it as an argument for dpkg-scanpackages later. If you do not want to write an override file, just use /dev/null. when calling dpkg-scanpackages.

Still in the /root directory do:

# dpkg-scanpackages debs file | gzip > debs/Packages.gz
In the above line, file is the override file, the command generates a file Packages.gz that contains various information about the packages, which are used by APT. To use the packages, finally, add:

deb file:/root debs/
After that just use the APT commands as usual. You may also generate a sources repository. To do that use the same procedure, but remember that you need to have the files .orig.tar.gz, .dsc and .diff.gz in the directory and you have to use Sources.gz instead of Packages.gz. The program used is also different. It is dpkg-scansources. The command line will look like this:

# dpkg-scansources debs | gzip > debs/Sources.gz
Notice that dpkg-scansources doesn't need an override file. The sources.list's line is:

deb-src file:/root debs/
2.3 Deciding which mirror is the best to include in the sources.list file: netselect, netselect-apt

A very frequent doubt, mainly among the newest users is: "which Debian mirror to include in sources.list?". There are many ways to decide which mirror. The experts probably have a script that measures the ping time through the several mirrors. But there's a program that does this for us: netselect.

To install netselect, as usual:

# apt-get install netselect
Executing it without parameters shows the help. Executing it with a space-separated list of hosts (mirrors), it will return a score and one of the hosts. This score takes in consideration the estimated ping time and the hops (hosts by which a network query will pass by to reach the destination) number and is inversely proportional to the estimated download speed (so, the lower, the better). The returned host is the one that had the lowest score (the full list of scores can be seen adding the -vv option). See this example:

# netselect ftp.debian.org http.us.debian.org ftp.at.debian.org download.unesp.br ftp.debian.org.br
365 ftp.debian.org.br
#
This means that, from the mirrors included as parameters to netselect, ftp.debian.org.br was the best, with an score of 365. (Attention!! As it was done on my computer and the network topography is extremely different depending on the contact point, this value is not necessarily the right speed in other computers).

Now, just put the fastest mirror found by netselect in the /etc/apt/sources.list file (see The /etc/apt/sources.list file, Section 2.1) and follow the tips in Managing packages, Chapter 3.

Note: the list of mirrors may always be found in the file http://www.debian.org/mirror/mirrors_full.

Beginning with the 0.3.ds1 version, the netselect source package includes the netselect-apt binary package, which makes the process above automatic. Just enter the distribution tree as parameter (the default is stable) and the sources.list file will be generated with the best main and non-US mirrors and will be saved under the current directory. The following example generates a sources.list of the stable distribution:

# ls sources.list
ls: sources.list: File or directory not found
# netselect-apt stable
(...)
# ls -l sources.list
sources.list
#
Remember: the sources.list file is generated under the current directory, and must be moved to the /etc/apt directory.

Then, follow the tips in Managing packages, Chapter 3.

2.4 Adding a CD-ROM to the sources.list file

If you'd rather use your CD-ROM for installing packages or updating your system automatically with APT, you can put it in your sources.list. To do so, you can use the apt-cdrom program like this:

# apt-cdrom add
with the Debian CD-ROM in the drive. It will mount the CD-ROM, and if it's a valid Debian CD it will look for package information on the disk. If your CD-ROM configuration is a little unusual, you can also use the following options:

-h - program help
-d directory - CD-ROM mount point
-r - Rename a recognized CD-ROM
-m - No mounting
-f - Fast mode, don't check package files
-a - Thorough scan mode
For example:

# apt-cdrom -d /home/kov/mycdrom add
You can also identify a CD-ROM, without adding it to your list:

# apt-cdrom ident
Note that this program only works if your CD-ROM is properly configured in your system's /etc/fstab.