I disagreed with this strongly. > concurrent processes Job control is disabled in shell scripts, and your only other option is juggling process ids. Combined

I disagreed with this strongly. > concurrent processes Job control is disabled in shell scripts, and your only other option is juggling process ids. Combined with nearly nonexistent exception handling using anything more than a single process at a time is like pulling teeth. Things like ssh have super awkward workarounds using control pipes. I'm not sure I've ever seen a shell script use concurrent processes in the wild. Python's subprocess library is excellent and makes concurrent processes a breeze. > file system With some minor exceptions, I can't think of any FS ops I'd do in shell that isn't just a couple letters longer in Python and 10 times more flexible. The only reason to use shell is that it has a simple syntax for pipelines. I rewrite any script > 2 lines in Python and have no regrets.