reading last line of logfile

[NewzLive]

Hi there - I'm occasianally getting error messages to do with reading web pages and the only way to resolve it is to kill/restart the bot.
I'm wondering if there's a way to read the last line of the eggdrop.log file every few minutes, and if it detects this:

couldn't open socket: host is unreachable

then kill the bot?

Thanks in advance.

[Sir_Fz]

That's the worst way for solving this problem. Obviously, this is not a normal behavior for the bot. You should try to fix the script which is causing the problem.

[NewzLive]

it's not the script - its just the website sometimes causes it to do that.
but thanks for the useless reply anyway.

[nml375]

I think what Sir_Fz was referring to, was to write a script that is capable of recovering from an unreachable host by itself, rather than requiring your whole bot to be restarted...

As for your question, run a crontab with a simple bash-script, something like this:

Code: Select all

if test ` tail -n 1 somelog | grep "couldn't open socket: host is unreachable -c` -ne 0
 then kill -9 `cat pidfile`
 ./configfile
fi

(Modified from a script I used to track apache-logs, might need further modifications...)

Of course, this is only one way of doing it with bashscripts, you could probably write something equivalent in tcl, perl, C, etc