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If the first two letters are "ii", then the package is installed. You can also use wildcards. For example,
.
dpkg -l openoffice*
.
Note that dpkg will usually not report packages which are available but uninstalled. If you want to see both which versions are installed and which versions are available, use this command instead:
.
apt-cache policy python
Note the double space: "...^ii␣␣linux-image-2..."
Like 5813, but fixes two bugs: [1]This leaves the meta-packages 'linux-headers-generic' and 'linux-image-generic' alone so that automatic upgrades work correctly in the future. [2]Kernels newer than the currently running one are left alone (this can happen if you didn't reboot after installing a new kernel).
I'm bummed that this took 228 characters. I'd like to see a simpler version.
This function returns TRUE if the application supports tcp-wrapping or FALSE if not by reading the shared libraries used by this application.
Lists all packages in "rc" state and purge them one at a time.
Works similar to dpkg -S, but uses the locatedb and is thus inarguably a lot faster - if the locatedb is current.
Add the BackTrack repositories to your Debian based GNU/Linux distribution. Thanks to http://it-john.com/home/technology/linux-technology/add-back-track-4-repo-to-ubuntu/
also search with aptitude search '~c'
A replacement for 'apt-cache' that uses a Xapian to produce ranked results. Available in 'apt-xapian-index' 0.27 and higher.
A little aptitude magic. Note: this will remove images AND headers. If you just want to remove images: aptitude remove ?and(~i~nlinux-im ?not(~n`uname -r`))
I used this in zsh without any problems. I'm not sure how other shells will interpret some of the special characters used in the aptitude search terms. Use -s to simulate.
This should do the same thing and is about 70 chars shorter.
This will remove all installed kernels on your debian based install, except the one you're currently using.
From:
http://tuxtweaks.com/2009/12/remove-old-kernels-in-ubuntu/comment-page-1/#comment-1590
If there is update available for the package you can see upgrade is from which version to which version. Also you will get detail about which release the package belongs to (stable/testing/sid).
Supports regex pattern and very flexible output parameters and search options.
if you don't want to show string "version?, then use awk or cut filter it: apt-cache show pkgname | grep -i "version:" | awk '{ print $2 }'
we can also use regex to search many packages and show their versions:
apt-cache search pkgregex | grep -i "version:"
Very handy if you have done a package selection mistake in aptitude.
Note that it's better to do a Ctrl+U (undo) in aptitude if possible, because the keep-all will clear some package states (like the 'hold' state).
Limits the usage of bandwidth by apt-get, in the example the command will use 30Kb/s ;)
It should work for most apt-get actions (install, update, upgrade, dist-upgrade, etc.)
Please install aria2c before you try the above command. On ubuntu the command to install aria2c would be:
sudo aptitude install aria2