Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

setpgrp(2) [ultrix man page]

setpgrp(2)							System Calls Manual							setpgrp(2)

Name
       setpgrp - set process group

Syntax
       setpgrp(pid, pgrp)
       int pid, pgrp;

Description
       The system call sets the process group of the specified process pid to the specified pgrp.  If pid is zero, the call applies to the current
       process.

       If the invoker is not the superuser, the affected process must either have the same effective user-id as the invoker or be a descendant	of
       the invoking process.

Return Values
       The  system  call  returns  zero (0) when the operation is successful.  If the request fails, -1 is returned, and the global variable errno
       indicates the reason.

Environment
       SYSTEM_FIVE

       When your program is compiled using the System V environment, is called without arguments and the new process group id is returned if  suc-
       cessful.

Diagnostics
       The system call fails and the process group is not altered, if one of the following occur:

       [EPERM]	      The  effective  user ID of the requested process is different from that of the caller and the process is not a descendent of
		      the calling process.

       [ESRCH]	      The requested process does not exist.

See Also
       getpgrp(2)

																	setpgrp(2)

Check Out this Related Man Page

SETPGID(2)						      BSD System Calls Manual							SETPGID(2)

NAME
setpgid, setpgrp -- set process group SYNOPSIS
#include <unistd.h> int setpgid(pid_t pid, pid_t pgrp); int setpgrp(pid_t pid, pid_t pgrp); DESCRIPTION
Setpgid() sets the process group of the specified process pid to the specified pgrp. If pid is zero, then the call applies to the current process. If the invoker is not the super-user, then the affected process must have the same effective user-id as the invoker or be a descendant of the invoking process. RETURN VALUES
Setpgid() returns 0 when the operation was successful. If the request failed, -1 is returned and the global variable errno indicates the reason. ERRORS
Setpgid() will fail and the process group will not be altered if: [EACCES] The value of the pid argument matches the process ID of a child process of the calling process, and the child process has successfully executed one of the exec functions. [EPERM] The effective user ID of the requested process is different from that of the caller and the process is not a descendant of the calling process. [ESRCH] The value of the pid argument does not match the process ID of the calling process or of a child process of the calling process. SEE ALSO
getpgrp(2) STANDARDS
The setpgid() function conforms to IEEE Std 1003.1-1988 (``POSIX.1''). COMPATIBILITY
Setpgrp() is identical to setpgid(), and is retained for calling convention compatibility with historical versions of BSD. 4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution
Man Page