Forgot to mention what getpgid(0) does.

1997-08-19 07:04:43 +00:00 · 1997-08-19 07:04:43 +00:00 · 4ff76833b4
commit 4ff76833b4
parent ff31b5e404
1 changed files with 5 additions and 0 deletions
--- a/lib/libc/sys/getpgrp.2
+++ b/lib/libc/sys/getpgrp.2
@ -50,6 +50,11 @@ The process group of the process identified by
 .Fa pid
 is returned by
 .Fn getpgid .
+If
+.Fa pid
+is zero,
+.Fn getpgid
+returns the process group of the current process.
 .Pp
 Process groups are used for distribution of signals, and
 by terminals to arbitrate requests for their input: processes