Managing Packages in Ubuntu using dpkg

Hi all,

dpkg is a debian package manager which is a medium-level tool to install, build, remove and manage debian packages.

Now i am giving the available commands for dpkg with examples :

1)Install a package

Syntax

dpkg -i <.deb file name>

Example

dpkg -i avg71flm_r28-1_i386.deb

2)Install all packages recursively from a directory

Syntax

dpkg -R

Example

dpkg -R /usr/local/src

3)Unpack the package, but don’t configure it.

Syntax

dpkg --unpack package_file

If you use -R option is specified, package_file must refer to a directory instead.

Example

dpkg --unpack avg71flm_r28-1_i386.deb

4)Reconfigure an unpacked package

Syntax

dpkg --configure package

If -a is given instead of package, all unpacked but uncon-figured packages are configured.

Example

dpkg --configure avg71flm_r28-1_i386.deb

5)Remove an installed package except configuration files

Syntax

dpkg -r

Example

dpkg -r avg71flm_r28-1_i386.deb

6)Remove an installed package including configuration files

Syntax

dpkg -P

If you use -a is given instead of a package name, then all packages unpacked, but marked to be removed or purged in file /var/lib/dpkg/status, are removed or purged, respectively.

Example

dpkg -P avg71flm

7)Replace available packages info

Syntax

dpkg --update-avail <Packages-file>

With this option old information is replaced with the information in the Packages-file.

8)Merge with info from file

Syntax

dpkg --merge-avail <Packages-file>

With this option old informa-tion is combined with information from Packages-file.

The Packages-file distributed with Debian is simply named Packages.dpkg keeps its record of available packages in /var/lib/dpkg/available.

9)Update dpkg and dselect’s idea of which packages are available with information from the package pack-age_file.

Syntax

dpkg -A package_file

10)Forget about uninstalled unavailable packages.

Syntax

dpkg --forget-old-unavail

11)Erase the existing information about what packages are available.

Syntax

dpkg --clear-avail

12)Searches for packages that have been installed only partially on your system.

Syntax

dpkg -C

13)Compare Package versions version numbers

Syntax

dpkg --compare-versions ver1 op ver2

14)Display a brief help message.

Syntax

dpkg --help

15)Display dpkg licence.

Syntax

dpkg --licence (or) dpkg --license

16)Display dpkg version information.

Syntax

dpkg --version

17)Build a deb package.

Syntax

dpkg -b directory [filename]

18)List contents of a deb package.

Syntax

dpkg -c filename

19)Show information about a package.

Syntax

dpkg -I filename [control-file]

20)List packages matching given pattern.

Syntax

dpkg -l package-name-pattern

Example

dpkg -l vim

21)List all installed packages, along with package version and short description

Syntax

dpkg -l

22)Report status of specified package.

Syntax

dpkg -s package-name

Example

dpkg -s ssh

23)List files installed to your system from package.

Syntax

dpkg -L package-Name

Example

dpkg -L apache2

24)Search for a filename from installed packages.

Syntax

dpkg -S filename-search-pattern

Example

dpkg -S /sbin/ifconfig

25)Display details about package

Syntax

dpkg -p package-name

Example

dpkg -p cacti

These were the options with examples. If you want more you can check the man pages for dpkg.

Please post a comment.

Regards,

Manohar Bhattarai

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