39 comment

1. In my personal version I modified the program with this:

   #!/bin/bash
   # Simple SHELL script for Linux and UNIX system monitoring with
   # ping command
   # -------------------------------------------------------------------------
   # Copyright (c) 2006 nixCraft project 
   # This script is licensed under GNU GPL version 2.0 or above
   # -------------------------------------------------------------------------
   # This script is part of nixCraft shell script collection (NSSC)
   # Visit http://bash.cyberciti.biz/ for more information.
   # -------------------------------------------------------------------------
   # Setup email ID below
   # See URL for more info:
   # http://www.cyberciti.biz/tips/simple-linux-and-unix-system-monitoring-with-ping-command-and-scripts.html
   # -------------------------------------------------------------------------
    
   # add hostname in NAME array
   NAME[0]="SERVER NAME ONE"
   NAME[1]="SERVER NAME TWO"
   NAME[2]="SERVER NAME ETC"
    
   # add ip / hostname separated by white space
   HOSTS="1.1.1.1 2.2.2 10.10.10.10"
    
   # no ping request
   COUNT=3
    
   # email report when
   SUBJECT="Ping failed"
   EMAILID="employee1@mycompay.com, employee2@mycompay.com, boss@mycompay.com"
    
   val=0
    
   for myHost in $HOSTS
   do
     archivo="$myHost.txt_$(date +%Y%m%d%H%M%S)"
     date > $archivo
     ping -c $COUNT $myHost >> $archivo
    
     count=$(cat $archivo | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
    
     if [ $count -eq 0 ]; then
       # 100% failed
       echo "Host : $myHost  ${NAME[$val]}  is down (ping failed) at $(date)" | mail -s "$SUBJECT" $EMAILID
     fi
     a=$val
     val=$(expr $a + 1)
   done

2. Can we print IP with host name in email alert.

3. Awesome post.
   Please also share that how to restart a server using unix.

4. N00b talking: How do i get my box with crunchbang on it get to email the notification? The script runs tĥrough, but it doesnt email, because my smtp requires authentification. (im not able to make the script pass this auth.)

   Thanx a lot for help, using this for monitoring a big Wireless system with lots of ips.(nonprofit)

5. Hi,

   In this script while executing we get multiple mails for multiple servers mentioned how to get all server details in one single mail which loop should i remove in this

6. I welcome! Prompt me as to adjust this script on constant repetition if ping is ok? If no ping send 1 msg and exit? cron not to offer.

7. #!/bin/bash

   # add ip / hostname separated by white space
   HOSTS=”YOU CAN ADD MULTIPLE IP’S HERE”
   # no ping request
   COUNT=1

   for myHost in $HOSTS;
   do
   count=`ping -c $COUNT $myHost | grep ‘received’ | awk -F’,’ ‘{ print $2 }’ | awk ‘{ print $1 }’`
   if [ $count -eq 0 ]
   then
   echo $myHost “WHAT EVER YOU WANT OUTPUT TO SAY”
   else
   echo $myHost “WHAT EVER YOU WANT OUTPUT TO SAY”
   fi
   done

   The “then” statement between quotes is what will be displayed if online

   The “else” statement between quotes is what will be displayed if not online

   1. Hi Lewcipher,

      From the below script if any ping goes down it immediately throws a mail. But how to configure this script if ping is (okay) it should shoot a mail that all are okay.

      Can u please help me.

      # add ip / hostname separated by white space
      HOSTS=”cyberciti.biz theos.in router”

      # no ping request
      COUNT=1

      # email report when
      SUBJECT=”Ping failed”
      EMAILID=”me@mydomain.com”
      for myHost in $HOSTS
      do
      count=$(ping -c $COUNT $myHost | grep ‘received’ | awk -F’,’ ‘{ print $2 }’ | awk ‘{ print $1 }’)
      if [ $count -eq 0 ]; then
      # 100% failed
      echo “Host : $myHost is down (ping failed) at $(date)” | mail -s “$SUBJECT” $EMAILID
      fi
      done

      Regards,
      Aryan

8. Quick question:
   If I set the ping count to 4 and only one of four will failed will I get the true positive alarm anyway?

9. thanks for posting it. saved me time.

10. How can I put this script on my dd-wrt router so it sends me alerts when one of the pc goes down? I don’t how to make run from my router. any suggestions.

    Thanks

11. Really cool script! It saved time =)
    Thanks to author

12. if [ ${count:-0} -eq 0 ] || [ -z “$count” ]; then
    I got “-eq: unary operator expected” with the original script…

    1. you should use like this if[[ ${count:-0} -eq 0 ] || [ -z “$count” ]]

13. if [ $count -eq 0 ] || [ -z “$count” ]; then

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