How to list all installed packages
From EasyPeasy Wiki
This is very useful for searching unnecessary packages or for fresh installations. :)
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[edit] Create a new list
To create a list of all installed packages just open a terminal and type:
dpkg --get-selections > installed-packages
This creates a file named "installed-packages" which contains a list of all installed packages.
[edit] Work with the list
[edit] View
You can view this list line by line with:
less installed-packages
[edit] Search
Search through the list with:
grep <Keyword> installed-packages
[edit] Reinstall all the packages
If you want to install all packages on the list type:
sudo dpkg --set-selections < installed-packages
[edit] Other ways to use 'dpkg'
[edit] Search for specific packages
If you kind of know what you are looking for you don't have to create a list as in the above:
dpkg -l | grep <package you are looking for>
example:
root@box1:~# dpkg -l | grep kernel ii ipmitool 1.8.8-3.1 utility for IPMI control with kernel driver ii linux-image-2.6.24-19-server 2.6.24-19.41 Linux kernel image for version 2.6.24 on x86 ii linux-image-server 2.6.24.19.21 Linux kernel image on Server Equipment. ii linux-server 2.6.24.19.21 Complete Linux kernel on Server Equipment. ii module-init-tools 3.3-pre11-4ubuntu5 tools for managing Linux kernel modules ii udev 117-8 rule-based device node and kernel event mana
[edit] Show the files that a package installs
You will need exact package name generated in the last tip for this:
dpkg --listfiles <specific installed package name>
Example:
root@box1:~# dpkg --listfiles linux-server /. /usr /usr/share /usr/share/doc /usr/share/doc/linux-server /usr/share/doc/linux-server/copyright /usr/share/doc/linux-server/changelog.gz
