How do i find out what programs are already installed?

mpooley · 03-21-2007, 07:25 AM

when installing i often read i nead such and such file or dependancy installed.

How can i find out if i already have it installed please?

thanks
Mike

ibanez697 · 03-21-2007, 08:01 AM

Try installing it using apt-get and it will tell you if you have the latest version installed.

mpooley · 03-21-2007, 04:08 PM

Quote:

Originally Posted by ibanez697

Try installing it using apt-get and it will tell you if you have the latest version installed.

OK I did that - it didnt tell me anything just installed it - still at least its installed now ! LOL

almatic · 03-21-2007, 04:34 PM

try

dpkg-query -l | less

mpooley · 03-21-2007, 04:44 PM

Quote:

Originally Posted by almatic

try

dpkg-query -l | less

That gave me a huge list! I take it that they are all the installed files then?

thanks
Mike

sholah · 03-21-2007, 04:47 PM

if u are using a rpm based OS,u can use

#rpm -qa

to query ur rpm database.

almatic · 03-21-2007, 06:06 PM

Quote:

Originally Posted by mpooley

That gave me a huge list! I take it that they are all the installed files then?

thanks
Mike

yes, if you want to find a specific package, use grep instead of less. dpkg-query -l | grep gnome will show you all installesd packages with 'gnome' in their name.
You can of course just use aptitude, like I do

Just type 'aptitude'. with <shift>+7 you can search for packages.

There are also graphical tools for that (synaptics for gnome and adept for kde) but I like aptitude better. I only use the adept-notifier to inform me about available updates and then install with aptitude.

tiarnach · 03-21-2007, 06:47 PM

I use Synaptic - it gives an accounting of everything installed.

mpooley · 03-21-2007, 07:14 PM

Thankyou thankyou!!! great response

Jongi · 05-19-2007, 02:15 PM

For debian based systems, I think that this will help to find what packages are installed from the command line:

dpkg-query -l <package name> | grep ii

Does anyone know how to get the same info using aptitude from the command line. I have read this site however I just can't seem to make heads or tails of it.