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ver command

Shows the version of MS-DOS you are using

Some versions of MS-DOS support an undocumented /r switch, which will show the revision as well as the version.

ver [/r]
    

Equivalent to the Unix command uname. However, in Linux uname may simply refer to the version of the kernel rather than the operating system itself, which is sometimes stored in a text file in /etc/name_version, or command lsb_release -a.

Command Prompt Commands » ver