EXIT(3F)EXIT(3F)NAME
exit - terminate process with status
SYNOPSIS
subroutine exit (status)
integer status
DESCRIPTION
Exit flushes and closes all the process's files, and notifies the parent process if it is executing a wait. The low-order 8 bits of status
are available to the parent process. (Therefore status should be in the range 0 - 255)
This call will never return.
The C function exit may cause cleanup actions before the final `sys exit'.
FILES
/usr/lib/libF77.a
SEE ALSO exit(2), fork(2), fork(3F), wait(2), wait(3F)4.2 Berkeley Distribution May 15, 1985 EXIT(3F)
Check Out this Related Man Page
EXIT(2) BSD System Calls Manual EXIT(2)NAME
_exit -- terminate the calling process
SYNOPSIS
#include <unistd.h>
void
_exit(int status);
DESCRIPTION
The _exit() function terminates a process, with the following consequences:
o All of the descriptors that were open in the calling process are closed. This may entail delays; for example, waiting for output to
drain. A process in this state may not be killed, as it is already dying.
o If the parent process of the calling process has an outstanding wait call or catches the SIGCHLD signal, it is notified of the calling
process's termination; the status is set as defined by wait(2).
o The parent process-ID of all of the calling process's existing child processes are set to 1; the initialization process (see the DEFINI-
TIONS section of intro(2)) inherits each of these processes.
o If the termination of the process causes any process group to become orphaned (usually because the parents of all members of the group
have now exited; see ``orphaned process group'' in intro(2)), and if any member of the orphaned group is stopped, the SIGHUP signal and
the SIGCONT signal are sent to all members of the newly-orphaned process group.
o If the process is a controlling process (see intro(2)), the SIGHUP signal is sent to the foreground process group of the controlling ter-
minal. All current access to the controlling terminal is revoked.
Most C programs call the library routine exit(3), which flushes buffers, closes streams, unlinks temporary files, etc., before calling
_exit().
RETURN VALUE
_exit() can never return.
SEE ALSO fork(2), sigaction(2), wait(2), exit(3)STANDARDS
The _exit function is defined by IEEE Std 1003.1-1988 (``POSIX.1'').
4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution
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