EXIT(1) General Commands Manual EXIT(1)

exit — cause the shell to exit

exit [n]

The exit utility shall cause the shell to exit with the exit status specified by the unsigned decimal integer n. If n is specified, but its value is not between 0 and 255 inclusively, the exit status is undefined.

A trap(1) on shall be executed before the shell terminates, except when the exit utility is invoked in that trap(1) itself, in which case the shell shall exit immediately.

None.

See the DESCRIPTION.

Not used.

None.

None.

Default.

Not used.

The standard error shall be used only for diagnostic messages.

None.

None.

The exit status shall be n, if specified. Otherwise, the value shall be the exit value of the last command executed, or zero if no command was executed. When exit is executed in a trap(1) action, the last command is considered to be the command that executed immediately preceding the trap(1) action.

Default.

None.

Exit with a value:

exit 0

Exit with a value:

exit 1

As explained in other sections, certain exit status values have been reserved for special uses and should be used by applications only for those purposes:

A file to be executed was found, but it was not an executable utility.
A utility to be executed was not found.
A command was interrupted by a signal.

None.

xcu_chap02(1)

IEEE Std 1003.1-2001 (“POSIX.1”)/Cor 1-2002, item XCU/TC1/D6/5 is applied so that the reference page sections use terms as described in the Utility Description Defaults ( xcu_chap01(1) ). No change in behavior is intended.

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December 6, 2001 posix.fail