Sometimes programs to use system error codes as exit codes. For example, Perl uses $! as as the error code when you call die. A quick and dirty way of finding the meaning of an system error number is to assign it to $^E.
$ perl -E'$^E=13; say $^E;' Permission denied
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Re^2: question on exitcode provided by status() method of Win32::Job
by BrowserUk (Pope) on Nov 17, 2010 at 05:26 UTC
by ikegami (Pope) on Nov 17, 2010 at 06:04 UTC