GETPID(2)
System Calls Manual
GETPID(2)
NAME
getpid
,
getppid
—
get parent or calling process identification
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <
unistd.h
>
pid_t
getpid
(
void
);
pid_t
getppid
(
void
);
DESCRIPTION
getpid
() returns the process ID of the calling process. The ID is guaranteed to be unique and is useful for constructing temporary file names.
getppid
() returns the process ID of the parent of the calling process.
ERRORS
The
getpid
() and
getppid
() functions are always successful, and no return value is reserved to indicate an error.
SEE ALSO
gethostid(3)
STANDARDS
getpid
() and
getppid
() conform to IEEE Std 1003.1-1990 (“POSIX.1”).
HISTORY
The
getpid
() function appeared in Version 5 AT&T UNIX.
April 3, 2010
NetBSD 5.99