It's not just bash, this is true for all POSIX shells (including dash, bash, ksh, and so on). If you're doing a lot of complex calculations, shells are the wro

It's not just bash, this is true for all POSIX shells (including dash, bash, ksh, and so on). If you're doing a lot of complex calculations, shells are the wrong tool for the job. But if it's a relatively small program whose primary task is invoking other programs on a Unix-like system, shells are still a decent choice. The biggest problems with shells are handled by using shellcheck, so if you're writing shell scripts, use shellcheck.