The main difference between bash/gnuutils stuff and Powershell is that every command returns an object (or an enumeration of objects), and commands can take an object (or an enumeration of objects) as input.

This lets everything implicitly understand how to access named properties without everyone having to do string parsing.

Sure, you can solve the same problems with bash/grep/awk/sed/etc - but sometimes it's a bunch simpler to solve in Powershell.