Robert Elz <k...@munnari.oz.au> writes: > | What seems to be the case with sh-style shells and Posix is that > | all-caps variable names are subject to implementation-specific use, and > | so users should not use them except when using them in the way that is > | specific to the implementation the script is to be executed on. > > That could have been done, once perhaps, but it is way too late now. > There is no such rule anywhere in POSIX sh, and scripts using upper > case var names abound in the world, there's no chance that they're > going away.
I was more looking at it as what sort of advice one should give to people who want to write "portable" scripts that won't be blindsided by a shell that makes some upper-case word special. Though it's quite possible that the bash manual page contains that advice somewhere that I've not looked at. Dale
