1GETPPID(3P)                POSIX Programmer's Manual               GETPPID(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       getppid — get the parent process ID
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SYNOPSIS

15       #include <unistd.h>
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17       pid_t getppid(void);
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DESCRIPTION

20       The getppid() function shall return the parent process ID of the  call‐
21       ing process.
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RETURN VALUE

24       The  getppid()  function shall always be successful and no return value
25       is reserved to indicate an error.
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ERRORS

28       No errors are defined.
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30       The following sections are informative.
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EXAMPLES

33       None.
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APPLICATION USAGE

36       None.
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RATIONALE

39       None.
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FUTURE DIRECTIONS

42       None.
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SEE ALSO

45       exec, fork(), getpgid(), getpgrp(), getpid(), kill(),  setpgid(),  set‐
46       sid()
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48       The Base Definitions volume of POSIX.1‐2017, <sys_types.h>, <unistd.h>
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51       Portions  of  this text are reprinted and reproduced in electronic form
52       from IEEE Std 1003.1-2017, Standard for Information Technology --  Por‐
53       table  Operating System Interface (POSIX), The Open Group Base Specifi‐
54       cations Issue 7, 2018 Edition, Copyright (C) 2018 by the  Institute  of
55       Electrical  and  Electronics Engineers, Inc and The Open Group.  In the
56       event of any discrepancy between this version and the original IEEE and
57       The  Open Group Standard, the original IEEE and The Open Group Standard
58       is the referee document. The original Standard can be  obtained  online
59       at http://www.opengroup.org/unix/online.html .
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61       Any  typographical  or  formatting  errors that appear in this page are
62       most likely to have been introduced during the conversion of the source
63       files  to  man page format. To report such errors, see https://www.ker‐
64       nel.org/doc/man-pages/reporting_bugs.html .
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68IEEE/The Open Group                  2017                          GETPPID(3P)
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