Shell script to watch the disk space

I noticed that on devices that have very long path in some cases there might be a line break appended to the output and that will in turn create an error when the script is run like:

line 22: [: -ge: unary operator expected

To remove the line break just append “-P” to the “df” command.

example:
df -HlP

(P) = adds posix compliance to the output.

Errors that occured: df -H
/dev/mapper/volume00-pgvol
50G 31G 19G 62% /localhome/postgresql

with -P
/dev/mapper/volume00-pgvol 50G 31G 19G 62% /localhome/postgresql

Also if you only have one type of filesystem that you need to monitor then add “-t ext3″ will only show EXT3 filesystems.

Hope it helps.
Regards,
Per L

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Please show me if I need to get disk file last week or 10 days ago, what do I need to do?
Thank you ~ Trula

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HI

thanks for script but i am getting following error
on my solaris 9 servrer after executing the scipt.

syntax error at line 5: `usep=$’ unexpected

Regards

Sorabh harit

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Can you please tell me how to find disk usage for a particular user only…!

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while executing the below script i am getting the following:

Script:

#!/bin/sh
df -H | grep -vE ‘^Filesystem’ | 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 [ $usep -ge 50 ]; then
echo “Running out of space \”$partition ($usep%)\” on $(hostname) as on $(date)” |
mail -s “Alert: Almost out of disk space $usep%” Hari-Krishna.Reddy@in.standardchartered.com
fi
done

Error:

sh diskAlert.sh
/dev/mapper/rootvg-rootvol
diskAlert.sh: line 7: [: /dev/mapper/rootvg-rootvol: integer expression expected
/ 4.2G
diskAlert.sh: line 7: [: /: integer expression expected
14% /dev/sda1
0% none
/dev/mapper/rootvg-homevol
diskAlert.sh: line 7: [: /dev/mapper/rootvg-homevol: integer expression expected
/home 2.1G
diskAlert.sh: line 7: [: /home: integer expression expected
/dev/mapper/rootvg-sharedvol
diskAlert.sh: line 7: [: /dev/mapper/rootvg-sharedvol: integer expression expected
/shared 6.3G
diskAlert.sh: line 7: [: /shared: integer expression expected
/dev/mapper/rootvg-varvol
diskAlert.sh: line 7: [: /dev/mapper/rootvg-varvol: integer expression expected
/var 2.1G
diskAlert.sh: line 7: [: /var: integer expression expected

can any one help me on this.

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i am able to run the shell script properly but if i put it in a crontab its not working fine
can anyone plz suggest me in this

thnks
david

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Hi

I have to select 10% of the files from a 1 million records file at random. Could anyone help me with a shell script?
thanks and regards
Prasanna

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hello..

what if your both partitions will run out of space? you will receive 2 mails. if you have more partitions, then you will receive more mails… how you do to receive all messages in one mail?

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#!/bin/sh
ADMIN="usuario@domain.com"
ALERT1=95
ALERT2=80
ALERT3=70
# Exemplu: EXCLUDE_LIST="/dev/hdd1|/dev/hdc5"
EXCLUDE_LIST="/dev/sr0"
#
#::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
#
function main_prog() {
while read output;
do
echo $output
  usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1)
  partition=$(echo $output | awk '{print $2}')
    if [ $usep -ge $ALERT1 ] ; then
     echo "Queda menos de  `expr 100 - $usep` % en la particion: $partition del servidor ServerName, \
$(date +%d-%b-%Y)" | \
     mail -s "Alerta alta prioridad: Informacion tamaño disco: $usep %" $ADMIN
   fi
   if [ $usep -ge $ALERT2 ] ; then
     echo "Queda menos de  `expr 100 - $usep` % en la particion: $partition del servidor ServerName, \
$(date +%d-%b-%Y)" | \
     mail -s "Alerta media prioridad: Informacion tamaño disco: $usep %" $ADMIN
  fi
    if [ $usep -ge $ALERT3 ] ; then
#     espacio= expr 100 - $ALERT3"
     echo "Queda menos de  `expr 100 - $usep` % en la particion: $partition del servidor ServerName, \
$(date +%d-%b-%Y)" | \
     mail -s "Alerta baja priridad: Informacion tamaño disco: $usep %" $ADMIN
  fi
done
}
if [ "$EXCLUDE_LIST" != "" ] ; then
  df -H | grep -vE "^Filesystem|tmpfs|cdrom|${EXCLUDE_LIST}" | awk '{print $5 " " $6}' | main_prog
else
  df -H | grep -vE "^Filesystem|tmpfs|cdrom" | awk '{print $5 " " $6}' | main_prog
fi

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there are some issues with this script

- it won’t work with non english output from df

Dateisystem             Size   Used  Avail Use% Eingehängt auf
/dev/sda1              9,9G   3,3G   6,1G  35% /
none                    17G   213k    17G   1% /dev
none                    17G      0    17G   0% /dev/shm
none                    17G   103k    17G   1% /var/run
none                    17G      0    17G   0% /var/lock
none                   9,9G   3,3G   6,1G  35% /var/lib/ureadahead/debugfs
/dev/sda2               64G    17G    48G  26% /usr/local
/dev/md0               147G    43G   105G  29% /mnt
/dev/sde1              400G   203G   198G  51% /mnt/usbdisk

change

    grep -vE "^Filesystem|tmpfs|cdrom"

to

    grep -vE "^Dateisystem|tmpfs|cdrom"

or you could change it to

  grep -vE "^[^/]|tmpfs|cdrom"

to remove all lines not starting with a / which would also remove mounted network shares (sshfs, nfs etc.)

additionally you could change the df command to

  df -hP fuse.sshfs -x nfs

to remove mounted network devices

another problem arises from the use of “sh” instead of bash –
it won’t work -
change the first line to

#!/bin/bash

to improve the error reporting you could also add the hostname to the subject line

mail -s "Alert: $(hostname) almost out of disk space $usep%" $ADMIN

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to remove non-local drives it would be better so use the “-l” option of df (substitute “df -H” with “df -lH”).

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Great script, very simple and works like a charm. i have a question tho, could someone help me to make this script to run a gzip command and monitor the pid in order to start another gzip after the first pid ends? Is it possible to do that, well, in scripts all is possible :)

I need to run 2 gzips on differents directories but can’t run them at the same time since this will eat my cpu and the disk IO will be very high. I need to start one and then the other. Thanks in advance

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I need to know the the usage of particular filesystem on 10 days back. Is it possible to use two or more df option in single line? If yes then how can we use twp grep statement in single line? Thanks in advance !!

I used below line:df -H | grep d30 | awk ‘{print $5 ” ” $1}’ | main_prog

But it is not sending any email.

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