If you wish require some users to install an interpreter, you might as well go for Korn or a real programming language. If you want to use something that's port

If you wish require some users to install an interpreter, you might as well go for Korn or a real programming language. If you want to use something that's portable and installed everywhere, that's POSIX sh (or at most dash-like level). Bash is in the poor middle which isn't good enough for either side, unless you really know what's your target and don't care about elsewhere.