Extract Paths from Strings Like Environment Variables

If you'd like to add a path to the %PATH% environment variable, that's easy:

PS> $env:path += ';c: \newpath'

But how would you remove a path? Here's a clever way:

PS> (($env:path -split ';') -ne 'C:\Windows\system32') -join ';'

To better understand the technique used, check out this part first:

PS> $env:path -split ';'

It will separate the paths in %PATH%. Next, -ne will return all paths that do not match the one you want to get rid of. Finally, -join adds these parts back to a semicolon-separated list.