I'm running Centos 5 and I need to know what version of PHP I'm running, is there a command for this which I can run?
An answer was accepted, but another option on RPM systems (RHEL, Centos, Fedora, etc.) is to use the following:
rpm -q php
And while I'm at it, the general method for using RPM to find info on a package for any rpm-installed program or file is similar to this (for awk):
Find the full path to the file if not known, such as for an executable in $PATH:
type -path awk
Find the name, including version, of the package containing the file:
rpm -qf /usr/bin/awk
If desired, query for info from that package:
rpm -qi gawk
It's a bit trickier for packages installed and used by Apache since they may not be on $PATH, but you can start with something like:
rpm -qa | egrep -i 'php|awk'