Is there any command line tool that can be used to edit environment variables in Windows?

Is there any command line tool that can be used to edit environment variables in Windows?

It would be nice if this was smart tool, for example:

• When adding some path to let's say the PATH variable and this path is already there it shouldn't double this entry.


• Inserting a new path to the PATH variable should be possible before/after some other path or in specific order (the first, the 7th, the last etc.).


• It should be possible to change only part of variable's value (in case of the PATH a given path from a list of all paths).

And the last but not the least - I want my changes to persist between sessions so simple SET is out of question...

There's very nice GUI tool for this called Path Editor and I need something like this but for command line.

Answer

Path Manager (pathman.exe) from Windows Server 2003 Resource Kit Tools is the closest match I could find. It was already available in NT Resource Kit.