help with alarming script

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# 1  
Old 09-02-2009
help with alarming script


im trying to setup a script which can look at a file and email me when a fail is present, this runs on cron every 10 minutes

Below is the file that will tell me if a PASS or FAIL has occured
$more monitor/results
Test: Status: PASS. Message: db is up
Test: Status: PASS. Message: CM is running
Test: Status: PASS. Message: 15% free space in data db
Test: Status: PASS. Message: 99% free space in log db

currently i have this script

# Version - V0.1 19/08/09
#!/bin/ksh -xv

#test to see if the database is up and running
if [ $(grep "01db_up" monitor/results|grep FAIL|wc -l) -eq 1 ] ; then

mailx -s "Sybase Alert"

// the above works great but i just need to know how to set up a better script

How can i start to make this better, what else would i put in the else statement apart from nothing!!!

any advise is greatly appreciated

# 2  
Old 09-02-2009
Originally Posted by jeffersno1
if [ $(grep "01db_up" monitor/results|grep FAIL|wc -l) -eq 1 ] ; then

if [ $($(grep -c 01db_up.*FAIL monitor/results) -ne 0 ] ; then

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# 3  
Old 09-02-2009
Thanks for your reply danmero

I was thinking.. would it be better to put the output of the command into a variable.

I'm new to scripting and i'm trying to get my head around it all.

is there anything wrong in do the following

01db_up="grep -c 01db_up.*FAIL monitor/results"

if [ $01db_up = -eq 1 ] ; then

is it not better to assign each test to a variable then maybe do a while test = 0 do nothing, if test = 1 then do do something??

this is what I'm finding difficult.

How would i achieve something like this and is it good practice?

thanks again

# 4  
Old 09-02-2009
Originally Posted by jeffersno1
I was thinking.. would it be better to put the output of the command into a variable.
Yes, if you want to reuse the value.
# 5  
Old 09-02-2009

You probably only need one of the two tests:

if grep -e "01db_up.*FAIL" -e "FAIL.*01db_up" monitor/results  ; then
   mailx -s "Sybase Alert"

# 6  
Old 09-03-2009
can you explain what the "01db_up.*FAIL" mean

is this saying that FAIL has to exist on the same line as 01db_up. whats the significance of the . before the *

many thanks

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