On Tue, Jan 29, 2008 at 02:54:14PM +0100, Helmut Schneider wrote: > pierre <[EMAIL PROTECTED]> wrote: >> On Tue, 29 Jan 2008 11:37:41 +0100 >> "Helmut Schneider" <[EMAIL PROTECTED]> wrote: >> >>> Claudio Jeker <[EMAIL PROTECTED]> wrote: >>>> We don't believe in pid files. Use pgrep(1) and pkill(1) instead, >>>> you will never have stale info that way. >>> >>> pgrep on OpenBSD does not support '-o' (Select only the oldest). It >>> is - well - it could be more useful. >>> >> man pgrep >> -n Match only the most recently created process, if any. >> >> Is that what you're looking for ? > > Not at all. I might find a child but I will never find the parent. > > [EMAIL PROTECTED] ~]# pgrep -fl httpd > 81972 /usr/local/sbin/httpd > 81960 /usr/local/sbin/httpd > 1115 /usr/local/sbin/httpd > 1114 /usr/local/sbin/httpd > 1111 /usr/local/sbin/httpd > 1109 /usr/local/sbin/httpd > 1108 /usr/local/sbin/httpd > 979 /usr/local/sbin/httpd > [EMAIL PROTECTED] ~]# > > To stop httpd, which pid should I kill, the oldest, or the most recent? > > OK, 'pgrep -fl httpd | tail -1' does the trick, and pgrep is not safe > enough for finding parents, but...
If you really want to find the parent you can... $ ps ax -O pgid | grep ntpd 4887 4887 ?? Is 0:00.01 ntpd: [priv] (ntpd) 7164 4887 ?? I 0:00.06 ntpd: ntp engine (ntpd) The header that gets stripped by grep: PID PGID TT STAT TIME COMMAND So you can see that for one process PID==PGID. Bingo. -- Darrin Chandler | Phoenix BSD User Group | MetaBUG [EMAIL PROTECTED] | http://phxbug.org/ | http://metabug.org/ http://www.stilyagin.com/ | Daemons in the Desert | Global BUG Federation
