setpgid
int setpgid(pid_t, pid_t);
(void) setpgid(0, shpgrp);
(void) setpgid(0, opgrp);
(void) setpgid(0, shpgrp);
(void) setpgid(0, pgrp);
setpgid(pid, pgrp);
setpgid (ppid, ppid);
(void) setpgid(0, pgrp);
(void)setpgid(pager_pid, 0);
(void) setpgid(0, 0);
return setpgid(0, CurrentPid);
setpgid(0, 0);
setpgid(0, svpgid);
setpgid(0, 0);
setpgid(0, svpgid);
setpgid(0, mypgid);
setpgid(parent, 0);
(void) setpgid(getpid(), getpid());
extern int setpgid(pid_t, pid_t);
if (setpgid(0, sap->sa_pgroup) != 0)
extern int setpgid(pid_t, pid_t);
return (setpgid(pid1, pid2));