William,
I found the question of whether or there is a way to make cron run every N
number of seconds quite interesting. As far as I know, there is no way to do
this, so you will have to make a crontab entry that runs a brute-force program
like this:
ping <host> ; sleep 10 ; ping <host> ; sleep 10 ; ping <host> ; sleep 10 ; ping
<host> ; sleep 10 ; ping <host> ; sleep 10 ; ping <host> ; sleep 10 ;
Then, just execute it every minute using crontab.
Alternatively, you can do something like this:
ping -i 10 <host>
doing so would send the ping command at every 10-second interval.
Finally, you might not need to do this-isn't it that keepalive is built-in for
all kernels? I'm not so sure about this though, so maybe someone here knows
better and could expound on this further. You would need to recompile to do
this, of course :)
dennison
[EMAIL PROTECTED] wrote:
>
>notice some ISP's have this evil habit of disconnecting their users who
>have been idle for just a few seconds like say 10 seconds for my ISP. i
>would like to write a crontab entry that executes a single ping every
>5 seconds. this way there is always activity.
>
>i was only able to find our how to do it for intervals of one minute.
>
>thanks.
>
>
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