GETPGRP(2)                                                          GETPGRP(2)



NAME
       getpgrp - get process group

SYNOPSIS
       pgrp = getpgrp(pid)
       int pgrp;
       int pid;

DESCRIPTION
       The  process group of the specified process is returned by _g_e_t_p_g_r_p_.  If
       _p_i_d is zero, then the call applies to the current process.

       Process groups are used for distribution of signals, and  by  terminals
       to  arbitrate  requests  for  their input: processes that have the same
       process group as the terminal are foreground and may read, while others
       will block with a signal if they attempt to read.

       This  call  is  thus  used by programs such as _c_s_h(1) to create process
       groups in implementing job control.  The TIOCGPGRP and TIOCSPGRP  calls
       described  in  _t_t_y(4) are used to get/set the process group of the con‐
       trol terminal.

SEE ALSO
       setpgrp(2), getuid(2), tty(4)



4.2 Berkeley Distribution       August 26, 1985                     GETPGRP(2)