I feel like there has got to be a better common denominator if you're willing to stick with just Linux. Yesterday I was trying to track down why a bash script

I feel like there has got to be a better common denominator if you're willing to stick with just Linux. Yesterday I was trying to track down why a bash script that worked on pretty much every platform I'd tried and across a bunch of different bash versions was not working on a new operating system. Turns out the script was relying on "non-standard" behavior in tr(1). Definitely not the first thing you think of when you see bash complaining about undefined variables. A bit further back I had similar fun with FreeBSD's installer now that they've ripped perl5 out of the base system. The installer is, of course, an unholy mix of C and sh.