UNIX assignments

Network management with ping

Write a bash script that will ping 192.168.142.1, mars.tekkom.dk, 172.16.4.77 once every minute. If it fails three times in a row (Three minutes) it should write to your terminal and send a mail to you. You have to be logged in twice.

One session where you run your program
Another session where you will receive your messages and read your mail

Used programs

ping
write
mail
sleep

Getting started

Use the man pages for ping, write and mail.

[heth@bkshost bin]$ man ping

Experiment with the commands until you know how they work. And make them work for you.
To test if ping failed or succeded you can use if

if ping -c 1 192.168.142.1 >/dev/null
  then echo "Ping succeded."
  else echo "Ping Failed."
fi