On Wed, Mar 10, 2010 at 10:24:10AM -0700, Byron Clark wrote: > On Wed, Mar 10, 2010 at 06:15:32PM +0100, Linas wrote: > > Byron Clark wrote: > > >On Wed, Mar 10, 2010 at 09:32:15AM -0700, Byron Clark wrote: > > >>if pidof sshd | grep -q $(cat /var/run/sshd.pid); then > > >> echo "pid in /var/run/sshd.pid is valid" > > >>else > > >> echo "invalid pid" > > >>fi > > >Ignore that, it isn't entirely safe. > > > > You may want grep -q "^$(cat /var/run/sshd.pid)\$" > > Unfortunately that only works if there is only one sshd process returned > by pidof. Here's the case I'm worried about: > > /var/run/sshd.pid: 343 > pidof sshd: 3433 And the case where add ^$ around the pid breaks: /var/run/sshd.pid: 343 pidof sshd: 343 2452 2453 -- Byron Clark
