Shell script to monitor or watch the disk space.... small help needed

[vikas027]

hi all,

I just found this script on net. However, im facing some problems running it.

#!/bin/bash
ALERT=70
ssh 10.61.37.176 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)"

   fi
done

I am using Sun OS. df -H, and grep -E options are not running.

I am getting these errors.

df: unknown option: H
Usage: df [-F FSType] [-abegklntVv] [-o FSType-specific_options] [directory | block_device | resource]
grep: illegal option -- E
Usage: grep -hblcnsviw pattern file . . .


pls help out !!

Thanks in adv.

[wje_lf]

It's been a while since I've used SunOS; I'm hoping someone who currently has access to it will jump in and help.

But.

According to the man pages, in the df command you should substitute -k for -H.

The usage of grep in the script is to weed out the lines of df output in which you're not interested. You should completely reconsider how to use grep in that situation, because I'm guessing the criteria for which to ignore certain df output lines is way, way different for your SunOS system than for a Linux system.

Furthermore, you should examine carefully the three uses of awk and the use of cut in this script, for the same reason: that the df output will be different on your system.

For purposes of comparison, you should do

df -k

on your system and compare it to this output from

df -H

on my Linux system:

Filesystem             Size   Used  Avail Use% Mounted on
/dev/hda1              7.8G   3.2G   4.2G  44% /
/dev/hda2              108G    27G    76G  26% /u
/dev/hdc1              7.8G   3.4G   4.0G  47% /y
/dev/hdc2              147G    19G   120G  14% /yu
/dev/ram0              7.8M    16k   7.3M   1% /mr

That output is likely to be in the same format for all Linux systems; I just did that df command on my ancient Slackware 9.1 system, but my wife's Kubuntu system (the latest and greatest, released for human consumption just a few days ago) shows the same output.

For more information, google these items:

SunOS man df
SunOS man grep
SunOS man awk
SunOS man cut
Linux man df
Linux man grep
Linux man awk
Linux man cut

Hope this helps.

Would a SunOS person please step forward and give more details?

[ghostdog74]

A reply here

[vikas027]

hey, I got the solution.
Just replace df -H with df -k
and
grep -E with egrep


it works fine then.

thanks a lot.

[papetova]

I think a lowercase h is what you probably wanted.