Тройная начальная загрузка - Mac, Windows, отслеживание в обратном порядке

set -e ?

set: set [-abefhkmnptuvxBCHP] [-o option-name] [--] [arg ...]
Set or unset values of shell options and positional parameters.

Change the value of shell attributes and positional parameters, or
display the names and values of shell variables.

 Options:
   -a  Mark variables which are modified or created for export.
   -b  Notify of job termination immediately.
   -e  Exit immediately if a command exits with a non-zero status. 
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