Re: Correct pexp variable for a shell script

On 6/22/19 12:43 PM, Antoine Jacoutot wrote:
> 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.


rukey# ps ux | grep authmail
root     93772  0.0  0.2   272   892 p0  S+p    2:10PM    0:00.01 grep
authmail
rukey# rcctl -d start authmail
doing _rc_parse_conf
doing _rc_quirks
authmail_flags empty, using default ><
doing _rc_parse_conf /var/run/rc.d/authmail
doing _rc_quirks
doing rc_check
authmail
doing rc_start
doing _rc_wait start
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
doing rc_check
Alarm clock
/etc/rc.d/authmail: kill: 73440: No such process
doing _rc_write_runfile
(ok)
rukey# rcctl -d check authmail
doing _rc_parse_conf
doing _rc_quirks
authmail_flags empty, using default ><
doing _rc_parse_conf /var/run/rc.d/authmail
doing _rc_quirks
authmail
doing rc_check
(failed)
rukey# ps | grep authmail
17035 p0  Ip      0:00.01 /bin/sh /usr/local/bin/authmail
25162 p0  R+p     0:00.01 grep authmail
rukey#