DPKG

1. Install a Package
[root@users~]# dpkg -i flashpluginnonfree_2.8.2+squeeze1_i386.deb
[root@users~]# dpkg --add-architecture i386
2. List all the installed Packages
[root@users~]# dpkg -l
To view a specific package installed or not use the option “-l” along with package-name. For example, check whether apache2 package installed or not.
[root@users~]# dpkg -l apache2
3. Remove a Package
[root@users~]# dpkg -r flashpluginnonfree
You can also use ‘p‘ option in place of ‘r’ which will remove the package along with configuration file. The ‘r‘ option will only remove the package and not configuration files.
[root@users~]# dpkg -p flashpluginnonfree
4. View the Content of a Package
[root@users~]# dpkg -c flashplugin-nonfree_3.2_i386.deb
5. Check a Package is installed or not
[root@users~]# dpkg -s flashplugin-nonfree
6. Check the location of Packages installed
[root@users~]# dpkg -L flashplugin-nonfree
7. Install all Packages from a Directory
[root@users~]# dpkg -R --install debpackages/
8. Unpack the Package but dont’ Configure
Using action “–unpack” will unpack the package, but it will don’t install or configure it.
[root@users~]# dpkg --unpack flashplugin-nonfree_3.2_i386.deb
9. Reconfigure a Unpacked Package
[root@users~]# dpkg --configure flashplugin-nonfree
10. Replace available Package information
The “–-update-avail” option replace the old information with the available information in the Packages file.
[root@users~]# dpkg –-update-avail package_name
11. Erase Existing Available information of Package
The action “–clear-avaial” will erase the current information about what packages are available.
[root@users~]# dpkg –-clear-avail
12. Forget Uninstalled and Unavailable Packages
The dpkg command with option “–forget-old-unavail” will automatically forget uninstalled and unavailable packages .
[root@users~]# dpkg --forget-old-unavail
13. Display dpkg Licence
[root@users~]# dpkg --licence
14. Display dpkg Version
later for copying conditions. There is NO warranty.
15. Get all the Help about dpkg
[root@users~]# dpkg –help