Re: [aclug-L] shell script

[Bob Deep <bobd@xxxxxxxxxxxx>]

Jesse Kaufman wrote:
> 
> is there some sort of shell script that can do the following for me?
> 
> 1.) run ping <arbitrary webpage> (i usually just do yahoo)
> 2.) if it connects no problems, just exit, doing nothing...
> 3.) if it is down send an e-mail to a predefined list of people (my
> netadmins)
>     with the subject line "quadnet's down AGAIN..."
> 
> the LAN i am on is up and down all the time, and unfortunately all
> network administers for it are not accessing inet via this LAN, so they
> only know it's down when they manually check (this server is, of course,
> windoze).

I don't know much about send mail, but you can write a script that does
what you want very easily...

Set up a loop, that loops for ever in the scripting language of
choice...

Inside that loop you do the following...

sleep for some length of time (say, 2 min or so)

ping some host once "ping -c 1 "

Check the return code of the ping...
0=Success, your network is alive
else... Send your mail message

Start the loop over...

I can help you with bash, csh, ksh, perl or even C and C++ versions of
this script if you have trouble with how to get it working..

-= bob =-
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