#!/bin/bash

#export maillist=mailxxx@gmail.com
export maillist=mailxxx@gmail.com;
#df -PH | grep -vE '^Filesystem|none|cdrom'|awk '{ print $5 " " $6 }' | while read output;
df -PH | grep -vE '^Filesystem|none|cdrom|swdepot'|awk '{ print $5 " " $6 }' > diskcheck.log;

#diskcheck is current output whereas disk_alert is previous runned output

if [ -s "$HOME/DBA/monitor/log/disk_alert.log" ]; then
#Getting variables and compare with old
  usep=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/diskcheck.log | cut -d'%' -f1)
  usep1=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/log/disk_alert.log | cut -d'%' -f1)
  partition=$(cat $HOME/DBA/monitor/diskcheck.log | awk '{ print $2 }' )
else
   cat $HOME/DBA/monitor/diskcheck.log > $HOME/DBA/monitor/log/disk_alert.log
fi
**echo $usep;
echo $usep1;**
if [ "$usep" -ge 60 ]; then
        if [ "$usep" -eq "$usep1" ]; then
                mail=$(awk '{ if("$usep" == "$usep1") print $0 }' $HOME/DBA/monitor/diskcheck.log)
                echo "Running out of space "$mail ($usep%)" on $(hostname) as on $(date)" | mail -s "Disk Space Alert: Mount $mail is $usep% Used" $maillist;
        fi
fi

66 65 85 66
66 65 85 66
disk_alert.sh: line 19: [: 66
65
85
66: integer expression expected

66
65
85
66

if [ "$usep" -ge 60 ]; then
       this condition will pass.

usep=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/diskcheck.log | cut -d'%' -f1)

usep=$(awk '{ if($1 > 60) print $1 }' $HOME/DBA/monitor/diskcheck.log

usep1=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/log/disk_alert.log | cut -d'%' -f1)