There is a debugger for bash: https://github.com/Trepan-Debuggers/bashdb https://github.com/Trepan-Debuggers/bashdb Not that I'm recommending 10k-line programs

There is a debugger for bash: https://github.com/Trepan-Debuggers/bashdb https://github.com/Trepan-Debuggers/bashdb Not that I'm recommending 10k-line programs in bash, but a debugger is useful when you need it.