Our filesystem provider could definitely use some performance work, and we're discussing redoing it at some point in the next minor version release or two.

Personally, for quick interactive stuff, I just `ls` when I'm sitting on a non-Windows machine. My finger muscle memory just does `ls -al` and `rm -rfv` when I'm sitting on a Linux box.

But if I need to do some heavy sorting/filtering, I'd much rather save the minutes wrestling grep/awk/sed/xargs than save the minutes on execution (or the hours on having just done some operation based on some grep/awk/sed/xargs work that I didn't properly test).