OSF

NAME

getpid, getpgrp, getppid − Gets the process ID, process group ID, parent process ID

SYNOPSIS

#include <unistd.h>

#include <sys/types.h>

pid_t getpid( void );

pid_t getpgrp( void );

pid_t getppid( void );

DESCRIPTION

The getpid() function returns the process ID of the calling process. 

The getpgrp() function returns the process group ID of the calling process. 

The getppid() function returns the parent process ID of the calling process.  When a process is created, its parent process ID is the process ID of its parent process.  If a parent process exits, the parent process IDs of its child processes are changed to the process ID of init. 

NOTES

AES Support Level:
Full use

RELATED INFORMATION

System calls: fork(2), kill(2), setpgid(2), setsid(2), wait(2)