Re: active/inactive jails

Barry Pederson wrote:
 > Oliver Fromme wrote:
 > > Michael Reifenberger wrote:
 > 
 > > > Is there an convinient way to get the processes associatet with
 > > > an jail.
 > > 
 > > ps(1) can display the jail numbers:  "ps -o jid,command"
 > > (JID 0 means the host system).  You can easily filter the
 > > output by jail ID.  If you don't know the jail ID, use
 > > jls(8) to find the jail by hostname, IP number or chroot
 > > path (which only works if you keep them unique, of course).
 > > 
 > > I once wrote a script called "jps" that makes it a little
 > > easier.  "jps" lists all jailed processes with their JID,
 > > and "jps <JID>" lists only the processes that belong to
 > > the specified JID.
 > > 
 > > http://www.secnetix.de/olli/scripts/jps
 > 
 > I think pgrep(1) is what you're looking for here.  Once you find the 
 > jail ID with jls(8), you can run
 > 
 >     pgrep -lf -j <jail_id>
 > 
 > to get a list if processes for that particular jail.

The problem with pgrep is that -- unlike ps -- the output
is not configurable (e.g. to list UIDs etc.).  Therefore
I think pgrep is mostly useful for scripts only, but not
that much for interactive work.

Best regards
   Oliver

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