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Hi,
On 15/07/18 16:33, Russell Coker via luv-main wrote:
> What's a good real-time log watching program?
>
> This is something I've wanted for a while but not had the
> inclination to get it going. The thing that finally made me want
> to do it is when my workstation gave the below log messages and
> decided to stop supporting USB 3.0 ports. As the ports that are
> most convenient for connecting my keyboard and mouse are USB 3.0
> that was inconvenient. Removing the xhci modules and loading them
> again fixed the problem. So what I want in this instance is a
> program that will detect one of the below messages and then run a
> script that will run some rmmod and modprobe commands to fix it. I
> want it to know which log entries it has dealt with to avoid
> performing the operation twice (which would cause problems) or
> maybe have a list of log messages in the problem solved category.
>
> Any suggestions?
>
>
> [18408.111698] xhci_hcd 0000:06:00.0: xHCI host not responding to
> stop endpoint command. [18408.111716] xhci_hcd 0000:06:00.0: xHCI
> host controller not responding, assume dead [18408.111738] xhci_hcd
> 0000:06:00.0: HC died; cleaning up [18408.111747] xhci_hcd
> 0000:06:00.0: Timeout while waiting for configure endpoint command
Simple bash?
$ l --full-time coker*
- -rw-r--r-- 1 andrewm andrewm 60 2018-07-15 17:23:06.450452422 +1000
coker-test.log
- -rw-r--r-- 1 andrewm andrewm 12 2018-07-15 17:23:06.450452422 +1000
coker-test.action-time
- -rw-r--r-- 1 andrewm andrewm 0 2018-07-15 17:23:07.278459755 +1000
coker-test.lastdone
In another terminal:
$ (tail -n0 -f coker-test.log |egrep --line-buffered '(aaa|aab)') >>
coker-test.action-time & (while :;do [[ coker-test.action-time -nt
coker-test.lastdone ]] && { echo do stuff;touch
coker-test.lastdone;break; };sleep 10;echo -n .;done)
Then echo some strings to coker-test.log from first terminal.
( Check status in second terminal each time)
$ echo zzz >> coker-test.log
$ echo aab >> coker-test.log
The echo of aab will cause the second terminal to show the following
and quit the loop:
...do stuff
The testing each 10 seconds (with sleep), so about 30 seconds in it
sees the aab string.
$ ls -lart --full-time coker*
- -rw-r--r-- 1 andrewm andrewm 68 2018-07-15 17:24:09.579011308 +1000
coker-test.log
- -rw-r--r-- 1 andrewm andrewm 16 2018-07-15 17:24:09.579011308 +1000
coker-test.action-time
- -rw-r--r-- 1 andrewm andrewm 0 2018-07-15 17:24:13.259043876 +1000
coker-test.lastdone
When you are happy that is all working fine, wrap the above to keep it
active:
while :;do (tail -n0 -f coker-test.log |egrep --line-buffered
'(aaa|aab)') >> coker-test.action-time & (while :;do [[
coker-test.action-time -nt coker-test.lastdone ]] && { echo do
stuff;touch coker-test.lastdone;break; };sleep 10;echo -n .;done);done
Cheers
A.
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