[HACKERS] negative pid?

[Michael Brusser]

I see this code in pg_ctl:

   PID=`sed -n 1p $PIDFILE`
   if [ "$PID" -lt 0 ];then
       PID=`expr 0 - $PID`


Wnen it is possible (and why) to have a negative number in postmaster.pid?

Thanks,
Mike





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