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RPM: SPECIAL TRICKS


There is a lot more to the rpm command then you might suspect on first sight. What I want to do in this tip is to cherry pick some real nice nuggets from the endless list of options.

You probably already know the most basic way to install/upgrade an RPM package:

Installing:

CODE
# rpm -ivh amarok-1.4.1-4mdk.i586.rpm


Upgrading:

CODE
# rpm -Uvh amarok-1.4.1-4mdk.i586.rpm


Removing:

CODE
# rpm -e amarok



But now for the special tricks, did you know you can also let the rpm command download and install the file for you ? ( works on http and ftp ):

CODE
# rpm -ivh http://kev.coolcavemen.com/static/repository/mandriva/2006.0/RPMS/amarok-1.4.1-4mdk.i586.rpm



And that you can downgrade the package you installed ( because the new one has a bug ? ):

CODE
# rpm -Uvh --oldpackage amarok-1.3.1-3mdk.i586.rpm



You can get detailed information on the package before installing it:

CODE
# rpm -qip amarok-1.4.1-4mdk.i586.rpm



This even works on a file you did not yet download:

CODE
# rpm -qip http://kev.coolcavemen.com/static/repository/mandriva/2006.0/RPMS/amarok-1.4.1-4mdk.i586.rpm



Also, you can get a complete list of all the files a package will install:

CODE
# rpm -qlp amarok-1.4.1-4mdk.i586.rpm



And sure this works on a file you have not yet download too:

CODE
# rpm -qlp http://kev.coolcavemen.com/static/repository/mandriva/2006.0/RPMS/amarok-1.4.1-4mdk.i586.rpm



Now 4 commands to get some info on packages that are already installed . . . first put a complete listing in your /home:

CODE
# rpm -qa | sort -f > installed_rpms.txt

     ( Note: There is a nice Tip at Distrowatch showing how to get a package list in other distros )


Here is how you get info on a single package:

CODE
# rpm -qi amarok



And a full list of the files belonging to an installed package:

CODE
# rpm -ql amarok



Finally if you are curious what package installed a file you found on your computer:

CODE
# rpm -qf /usr/share/apps/zeroconf/_shoutcast._tcp




Well, you'll have to admit, the rpm command is pretty versatile  . . . . and there is more, just have a look at "man rpm" and you will see there is at least a hundred different options listed.



Bruno



-- Oct 14 2006 --


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