bash - Best practices on setting exit status codes -


when implementing own scripts, best practice exit different exit codes different failure scenarios? or should return exit code 1 failure , 0 success providing reason on stderr?

providing descriptive error message stderr fine , interactive users, if expect scripts used other scripts/programs, should have distinctive error codes different failures, calling script make informed decision on how handle failure.

if calling program not wish handle different failures differently check return code against > 0 - don't assume case.


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