SETPGID(2) BSD System Calls Manual SETPGID(2)NAME
setpgid, setpgrp — set process group
DESCRIPTIONSetpgid() sets the process group of the specified process pid to the
specified pgrp. If pid is zero, then the call applies to the current
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
RETURN VALUESSetpgid() returns 0 when the operation was successful. If the request
failed, -1 is returned and the global variable errno indicates the rea‐
ERRORSSetpgid() will fail and the process group will not be altered if:
The requested process does not exist.
The effective user ID of the requested process is different from
that of the caller and the process is not a descendent of the
SEE ALSOgetpgrp(2)STANDARDSSetpgid() conforms to IEEE Std 1003.1-1988 (“POSIX”).
COMPATIBILITYSetpgrp() is identical to setpgid(), and is retained for calling conven‐
tion compatibility with historical versions of BSD.
4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution