How to write this script?

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# 1  
Old 07-14-2011
How to write this script?

How to write this script?

I want to write script so that is "/var" partition exceeds 90% then it should mail to me.

Please give me guidelines.

# 2  
Old 07-14-2011
Here is one way of doing it:
typeset -i mPct=$(df -k /var | sed -n '/%/s/%.*//p')
if [[ ${mPct} -ge 90 ]]; then
  <insert your mail statement here>

This User Gave Thanks to Shell_Life For This Post:
# 3  
Old 07-14-2011
You can use the following code also.

FS=`/usr/sbin/df -k /var | /usr/bin/tail -1 | /usr/bin/awk '{print $5}' | cut -d % -f1`
if [ $FS -gt 90 ]
mailx -s "Filesystem /var over 90% "

Schedule it in crontab to execute every 3 mins or as required.
This User Gave Thanks to jaiseaugustine For This Post:
# 4  
Old 07-16-2011
Thanks guys you are very helpful, Will try this!
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