Difference between revisions of "UNIX assignments"
From Teknologisk videncenter
| Line 19: | Line 19: | ||
if ping -c 1 192.168.142.1 >/dev/null | if ping -c 1 192.168.142.1 >/dev/null | ||
then echo "Ping succeded." | then echo "Ping succeded." | ||
| − | else echo "Ping Failed. | + | else echo "Ping Failed." |
fi | fi | ||
</pre> | </pre> | ||
Revision as of 16:07, 12 February 2009
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
- 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