Re: Correct pexp variable for a shell script

On Sat, Jun 22, 2019 at 10:42:39AM -0400, Jacob Adams wrote:
>
> On 6/22/19 7:05 AM, Antoine Jacoutot wrote:
> > On Fri, Jun 21, 2019 at 03:57:41PM -0400, Jacob Adams wrote:
> >> I've got a shell script I'd like to run as a system service. Due to the
> >> 16 character limitation on pgrep and the -x flag that rc.subr passes to
> >> check by default, I can't get check or stop to work correctly. The
> >> problem is that the process name looks like "/bin/sh
> >> /usr/local/bin/script.sh" which, even if passed to pgrep, won't match
> >> when -x is used.
> >>
> >> My rc.d script currently looks like this:
> >>
> > Hi.
> >
> > That should not be an issue, that's why pexp is used for.
> > But without more context it's hard to know how to help you.
> >
> > I can match sh scripts without issue:
> > $ pgrep -xf "/bin/sh /etc/gdm/Xsession /usr/local/bin/gnome-session"
> > 77289
> >
> > Are you sure your entire process line is "bin/sh /usr/local/bin/authmail"?
> > We don't run into the 16 chars limitation when using -xf
>
>
> Here's what I was seeing that led me to that conclusion:
>
> rukey$ ps aux | grep authmail
> root     51889  0.0  0.1   724   568 p0- Ip    Fri12AM    0:00.01
> /bin/sh /usr/local/bin/authmail
> jacob    25510  0.0  0.2   272   892 p0  S+p   10:36AM    0:00.01 grep
> authmail
> rukey$ pgrep -f /bin/sh /usr/local/bin/authmail
> 51889
> rukey$ pgrep -xf /bin/sh /usr/local/bin/authmail
>
>
> However, I didn't think to quote it. that seems to fix it:
>
> rukey$ pgrep -xf "/bin/sh /usr/local/bin/authmail"
> 51889
>
> It appears that rc.subr uses quotes, but:
>
> rukey# pgrep -xf "/bin/sh /usr/local/bin/authmail"
> 51889
> rukey# rcctl check authmail
> authmail(failed)
> rukey#
>
> Any idea what could be going wrong here?

Dunno, run rcctl in debug mode.

--
Antoine