You're right. However, I'm also extending the set of exit codes with Bash recognised statuses[1]. This also includes a list of fatal signals, e.i. exit codes 12

You're right. However, I'm also extending the set of exit codes with Bash recognised statuses[1]. This also includes a list of fatal signals, e.i. exit codes 128 + n, where n is a corresponding signal error.[2] [1] http://tldp.org/LDP/abs/html/exitcodes.html http://tldp.org/LDP/abs/html/exitcodes.html [2] https://man.openbsd.org/signal.3 https://man.openbsd.org/signal.3