Return to getpgrp.2 CVS log

Up to [Power 6/32 Unix Tahoe 4.2BSD] / cci / usr / src / man / man2

Annotation of cci/usr/src/man/man2/getpgrp.2, revision 1.1.1.1

1.1       root        1: .TH GETPGRP 2 "2 July 1983"
                      2: .UC 4
                      3: .SH NAME
                      4: getpgrp \- get process group
                      5: .SH SYNOPSIS
                      6: .ft B
                      7: .nf
                      8: pgrp = getpgrp(pid)
                      9: int prgp;
                     10: int pid;
                     11: .fi
                     12: .ft R
                     13: .SH DESCRIPTION
                     14: The process group of the specified process is returned by
                     15: .I getpgrp.
                     16: If
                     17: .I pid
                     18: is zero, then the call applies to the current process.
                     19: .PP
                     20: Process groups are used for distribution of signals, and
                     21: by terminals to arbitrate requests for their input: processes
                     22: which have the same process group as the terminal are foreground
                     23: and may read, while others will block with a signal if they attempt
                     24: to read.
                     25: .PP
                     26: This call is thus used by programs such as
                     27: .IR csh (1)
                     28: to create
                     29: process groups
                     30: in implementing job control.
                     31: The TIOCGPGRP and TIOCSPGRP calls
                     32: described in
                     33: .IR tty (4)
                     34: are used to get/set the process group of the control terminal.
                     35: .SH "SEE ALSO"
                     36: setpgrp(2), getuid(2), tty(4)

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.