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vijayscripts · #1 (**permalink**) 06-19-2007, 11:07 PM

Hi,

I would like to write an shell script on linux(bash), which would check the disk space on remote systems and allow to build if the free space is more than 70%.
can any one wirte a script for the same.

nixcraft · #2 (**permalink**) 06-20-2007, 12:14 AM

Pretty simple if remote server runs ssh server all you have to do is ssh into box and login using SSH keys and run df command:

Code:

ssh user@remote-server.ip.com df

First step is setup - SSH Public key based authentication - Howto | nixCraft

Second step is modify script - Shell script to watch the disk space | nixCraft

Here is modified script, make sure you setup ssh username and IP/hostname:

Code:

#!/bin/bash
ADMIN="me@somewher.com"
ALERT=70
ssh user@ip-address.com df -H  > /tmp/df.out
cat /tmp/df.out | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
  #echo $output
  usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  partition=$(echo $output | awk '{ print $2 }' )
  if [ $usep -ge $ALERT ]; then
    echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" | 
     mail -s "Alert: Almost out of disk space $usep" $ADMIN
  fi
done

vijayscripts · #3 (**permalink**) 06-20-2007, 09:33 PM

Vivek,

Thanks for the script, it was perfect,but now my boss reliased that he want the processes running on remote systems and not the disk free space.

Actually I wanted to use dmake on remote systems,so when i execute the script it need to check the processes running and the cpu occupied. so that the dmake can be performed.

Currently the dmake is failing on some of the remote systems if the cpu occupied is crossing certian limit.

please do help me on this too.

monk · #4 (**permalink**) 06-20-2007, 11:10 PM

Logic is same so just write out your own script

vivekv · #5 (**permalink**) 10-20-2007, 09:38 PM

I used this php file

<?php
$a = shell_exec('df -h');
echo $a;
?>

Any idea how to display it i order ?

Thanks

nixcraft · #6 (**permalink**) 10-21-2007, 07:29 PM

May be try out

Code:

 <?php
 $a = shell_exec('df -h');
echo '<h2>Disk space</h2><pre>';
echo $a;
echo '</pre>';
 ?>

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Shell script to check the disk space on remote systems

Shell script to check the disk space on remote systems

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