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Top Forums Shell Programming and Scripting Filesystem alert shell script not working!! Post 303036557 by bakunin on Tuesday 2nd of July 2019 05:56:02 AM
Old 07-02-2019
Quote:
Originally Posted by harveyclayton
Hi All,

My below shell script is not capturing %used value in the filesystem alert in the subject of the mail alert:

Code:
Code:
#!/bin/bash

export DBALIST="abc@xyz.com"

df -k /oradata/xyz/archive > dfk.result
archive_capacity=`awk -F" " '{ print $5 }' dfk.result|grep -i %| cut -c 1-4`
if [[ $archive_capacity > 60% ]]
then
mailx -s "Filesystem /oradata is ${archive_capacity} filled" $DBALIST < dfk.result
fi

First, i do not understand what you need the temporary file for and you SHOULD AVOID backticks:

Code:
df -k /oradata/xyz/archive > dfk.result
archive_capacity=`awk -F" " '{ print $5 }' dfk.result|grep -i %| cut -c 1-4`

could be replaced by

Code:
archive_capacity=$(df -k /oradata/xyz/archive|awk -F" " '{ print $5 }' |grep -i %| cut -c 1-4)

But, honestly, whenever i see a awk|grep|cut i know there is something deeply amiss. All that grepping and cutting can be done inside awk, but i do not now what your exact df-output is, so it is hard to suggest what the awk-line should exactly look like.

Furthermore, this:

Code:
if [[ $archive_capacity > 60% ]]

cannot work: the ">" operator of the test-utility is not understood by all versions of test but even the ones that do only compare integers and "60%" is not an integer - it is a string. You should get rid of the "%" sign when you create the $archive_capacity content and then do like:

Code:
if [[ $archive_capacity -gt 60 ]]

first, this is an integer operation and second "-gt" (greater than) is an operator every test will understand.

I hope this helps.

bakunin
 

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