HOWTO: Find a version of something

[mitto]

If it was installed by RPM you can use this shell command (as root) to find out what version you have installed of any program on your box.

Example for squirrelmail:

rpm --query -a | grep squirrelmail

And some others:

rpm --query -a | grep exim

rpm --query -a | grep sendmail

To see the entire list:

rpm --query -a

This isn't 100% because some programs are inside other packages. Like the "net-tools" package contains things like "ifconfig, netstat, route" and others.

For that you could use a command like this:

rpm --query -ai | grep -B 10 -A 10 netstat

[xxqq]

Some distro use PKG-CONFIG for information about installed versions of applications.

http://pkgconfig.freedesktop.org/

The location of ".pc" files are in:
/usr/lib/pkgconfig
..or...
/usr/local/lib/pkgconfig
Or other locations.

You can read the ".pc" files using ordinary text editor, or "cat *.pc" to list the content of the files.

cat *.pc > application_list.txt