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GETPID(2) FreeBSD System Calls Manual GETPID(2)
NAME
getpid, getppid -- get parent or calling process identification
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/types.h>
#include <unistd.h>
pid_t
getpid(void);
pid_t
getppid(void);
DESCRIPTION
The getpid() system call returns the process ID of the calling process.
Though the ID is guaranteed to be unique, it should NOT be used for con-
structing temporary file names, for security reasons; see mkstemp(3)
instead.
The getppid() system call returns the process ID of the parent of the
calling process.
ERRORS
The getpid() and getppid() system calls are always successful, and no
return value is reserved to indicate an error.
SEE ALSO
gethostid(3)
STANDARDS
The getpid() and getppid() system calls are expected to conform to
ISO/IEC 9945-1:1990 (``POSIX.1'').
HISTORY
The getpid() function appeared in Version 7 AT&T UNIX.
FreeBSD 6.2 June 4, 1993 FreeBSD 6.2
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This page was generated on Wed Sep 19 20:03:29 BST 2007
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