GETPID(2)

NAME
getpid, getppid - get parent or calling process identification

LIBRARY
libc

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 p1003.1-90.

HISTORY
The getpid() function appeared in AT&T UNIX.