Shell script to notify of service down

Shell Programming and Scripting
1

Hi All

I am trying to write a shell script that will notify via email if a particular service is down. What I have so far is a script in

cron

like his:

#!/bin/sh
cd /usr/jdk/instances/jdk1.6.0/bin/sparcv9
jps -m

And the output of the above is

 81529 Jps
  52988 TaskControllerService
  52670 StreamControllerService

But what I would like to receive is an email with the following heading:

"Service name" "Value"

where

"Value"

is either

online

or

offline

.

2

Here is one way of doing it:

#!/bin/ksh

for service in TaskControllerService StreamControllerService
do
        if /usr/jdk/instances/jdk1.6.0/bin/sparcv9/jps | /usr/sfw/bin/ggrep -q "$service"
        then
                print "$service online"
        else
                print "$service offline"
        fi
done > mail_body

mailx -s "Subject" user@domain.com < mail_body

If you don't have ggrep replace that line with:

if /usr/jdk/latest/bin/sparcv9/jps | grep "$service" 1>/dev/null 2>/dev/null
1 Like
3

You don't need the GNU utilities version of grep to use the -q option. It has been in the formal standards for more than two decades and in the SVID and X/Open Portability Guides quite a while before there were formal standards for UNIX and UNIX-like system utilities.

4

Don, the grep in /usr/bin/ on Solaris does not support -q option: grep manual

/usr/bin/grep [-bchilnsvw] limited-regular-expression
	    [filename]...
5

It is there in /usr/xpg4/bin/grep and /usr/xpg6/bin/grep. In theory, -q support should have been added to /usr/bin/grep when /usr/xpg4/bin/grep was created (since adding that option would not break any correct use of grep before that option was added), but that didn't always happen.

6

Hi

It worked fine, after changing the

if

statement to avoid the

ggrep

.
Thank you very much