IngmarBoddington · April 17, 2015 15:10
diff --git a/exit b/exit
 1	Catchall for general errors	let "var1 = 1/0"	Miscellaneous errors, such as "divide by zero" and other impermissible operations
 2	Misuse of shell builtins (according to Bash documentation)	empty_function() {}	Missing keyword or command, or permission problem (and diff return code on a failed binary file comparison).
 126	Command invoked cannot execute	/dev/null	Permission problem or command is not an executable
 127	"command not found"	illegal_command	Possible problem with $PATH or a typo
 128	Invalid argument to exit	exit 3.14159	exit takes only integer args in the range 0 - 255 (see first footnote)
 128+n	Fatal error signal "n"	kill -9 $PPID of script	$? returns 137 (128 + 9)
 130	Script terminated by Control-C	Ctl-C	Control-C is fatal error signal 2, (130 = 128 + 2, see above)
 255*	Exit status out of range	exit -1	exit takes only integer args in the range 0 - 255
	1 Catchall for general errors let "var1 = 1/0" Miscellaneous errors, such as "divide by zero" and other impermissible operations
	2 Misuse of shell builtins (according to Bash documentation) empty_function() {} Missing keyword or command, or permission problem (and diff return code on a failed binary file comparison).
	126 Command invoked cannot execute /dev/null Permission problem or command is not an executable
	127 "command not found" illegal_command Possible problem with $PATH or a typo
	128 Invalid argument to exit exit 3.14159 exit takes only integer args in the range 0 - 255 (see first footnote)
	128+n Fatal error signal "n" kill -9 $PPID of script $? returns 137 (128 + 9)
	130 Script terminated by Control-C Ctl-C Control-C is fatal error signal 2, (130 = 128 + 2, see above)
	255* Exit status out of range exit -1 exit takes only integer args in the range 0 - 255