The version command line utility is my first published program. It fetches the version of a given program. For example, ./version.sh dolphin will return something like "4:4.14.2-1"
Currently it only works on Debian, RHEL, and OpenSuSE. Support for other distros is underway. Eventually the version command will become distro independent; however, that would require the ability to get version numbers via PackageKit, which I have no idea how to do.
The current version is 0.2.1. I will release a 1.0 once it is distro independent and can do error handling well.