How can I check installed program versions in terminal. Is there any command for that, for example ver or something similar?

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1 Answer

The way how to know version of an installed package varies for different programs. Usually 

application_name --version

or

application_name -version

can be used to know it. It is better to see man application_name and search which is the command line switch to know the version.

If you installed any package using apt, to see the version you can try 

apt-cache policy package_name

In few cases the version can be found in application_name --help. For example virtualbox

In few very little case application_name -v also gives you version.

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