How to List Installed RPMs
The rpm -qa command lists all the packages installed on your system:
[root@bigboy tmp]# rpm -qa
perl-Storable-1.0.14-15
smpeg-gtv-0.4.4-9
e2fsprogs-1.27-9
libstdc++-3.2-7
audiofile-0.2.3-3
...
...
...
[root@bigboy tmp]#
You can also pipe the output of this command through the grep command if you are interested in only a specific package. In this example we are looking for all packages containing the string ssh in the name, regardless of case (-i means ignore case).
[root@bigboy tmp]# rpm -qa | grep -i ssh
openssh-server-3.4p1-2
openssh-clients-3.4p1-2
openssh-askpass-gnome-3.4p1-2
openssh-3.4p1-2
openssh-askpass-3.4p1-2
[root@bigboy tmp]#
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You could use the rpm -q package-name command to find an installed package because it is much faster than using grep and the -qa switch, but you have to have an exact package match. If you are not sure of the package name and its capitalization, the latter method is probably more suitable.
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