Pid or not pid

[Peter William Stephenson <pws@ifh.de>]

Some of the code in execcmd() is getting executed in the parent rather
than the child, presumably since the last rearrangement... in
particular, nice(5) is getting called if fork() returned a non-zero
pid, i.e. in the parent (line 1350 of exec.c).  This means each time a
background process is forked, the parent shell has a lower priority.
This may be a good way to deal with process hogs, but I don't think
it's what's intended.

% ps -l -p$$
 F S   UID   PID  PPID  C PRI NI  P    SZ:RSS      WCHAN TTY      TIME COMD
30 S  2082 18544 21831  2  39 20  *   775:366   801bf9c0 pts/54   0:01 zsh
% sleep 3 &
[1] 19247
+4:52% ps -l -p$$
 F S   UID   PID  PPID  C PRI NI  P    SZ:RSS      WCHAN TTY      TIME COMD
30 S  2082 18544 21831  1  39 25  *   775:361   801bf9c0 pts/54   0:01 zsh
% 

-- 
Peter Stephenson <pws@ifh.de>       Tel: +49 33762 77366
WWW:  http://www.ifh.de/~pws/       Fax: +49 33762 77330
Deutches Electronen-Synchrotron --- Institut fuer Hochenergiephysik Zeuthen
DESY-IfH, 15735 Zeuthen, Germany.