I always regret writing bash scripts, which start really simple, but tr require refactoring into perl after a few days. Only problem with perl I've run into is

I always regret writing bash scripts, which start really simple, but tr require refactoring into perl after a few days. Only problem with perl I've run into is analysing text at speed - 60,000 lines a second of regex doesn't work on a raspberry pi or other low end processor.