Im going to go with the deceptively simple approach:

  $ps -A | grep httpd | wc -l

  that assumes you have access to the server of course.

  checking active ports remotely can be done with nmap.

  -jmz


On Thu, Apr 17, 2008 at 12:54 AM, KevinO <kevin@kevino.org> wrote:
> Deepan wrote:
>  > Hi All,
>  > I am looking for a script to check if Apache is up
>  > and running, if not the script should send an
>  > email automatically. The script has to be run from
>  > a different machine (not from the machine that
>  > runs apache). So it has to query for a http
>  > address and if it receives any other reply that
>  > 200 OK, it should send the email. Can you guys
>  > suggest on how to go about ? Should I use curl ?
>  > or wget ? or ping ? I can handle the email part
>  > and cron part. If you guys have a similar script
>  > please share it if possible.
>  > Regards
>  > Deepan
>  I used to do this with a small bash script that used wget to fetch a very small
>  text file from a remote web server, then check the return status "$?" of the wget
>  command, sending an email out if the exit status was non-zero.
>
>  Very simple and worked like a champ.
>
>  --
>  KevinO
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