[SATLUG] program or cron job to ping internal devices & email

Ed Coates edcoates at gmail.com
Wed Jan 16 07:12:38 CST 2008


Big Brother (or whatever it's calling itself) comes to mind.  Only
problem is that you need an agent on each box you want monitored.  It
can also monitor a whole lot more and send email/pages and things

On Jan 16, 2008 6:29 AM, twistedpickles <twistedpickles at gmail.com> wrote:
> Thanks but I dont't think that will work because an unsuccessful ping also returns or displays info and when piped will also be gt than 0kb
>
> twistedpickles
>
> //Message sent from mobile handset
>
>
> -----Original Message-----
> From: "Geoff" <geoff at w5omr.shacknet.nu>
> To: "The San Antonio Linux User's Group Mailing List" <satlug at satlug.org>
> Sent: 1/16/08 5:15 AM
> Subject: Re: [SATLUG] program or cron job to ping internal devices & email
>
> twistedpickles wrote:
> > Does know or have a program or cron job that can ping network devices and if
> > down send out an email?
>
> Well, ping returns a result, right?  if it doesn't you could do a number
> of things.
>
> One that comes to mind, is to ping whatever you want, for a specified
> amount of pings, pipe that info to a file then have the cron exit with
> an error level, check the file size and it's other than 0b, don't send a
> message.
>
> Of course, you'd probably want to ping whoever for about 15 or 20
> responses so that there's significant data in the text file you've piped
> your ping information to.
>
> just as an example...
>
> I got a return of
>
>  :> ls -la ping.txt
> -rw-r--r-- 1 geoff users 1007 2008-01-16 05:12 ping.txt
>
> when I did
> :> ping -c10 w5omr.shacknet.nu >ping.txt
>
> so, you could write a simple little script file to call ping, pipe the
> output to a file, check if the filesize is greater than 0bytes and if
> not, send a message.
>
> Clear as mud?
>
>  ;-)
>
> --
> Geoff
>
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