Hi, I'm running several rack-mounted linux servers all Ubuntu Server edition. I use mostly shellscripts to watch and control my systems. I would like to ma a script and have CRON run it for me. I know how to configure CROn so thats not it. What I very much would like, is for you guys to give me your suggestion on a little shellscript pinging a running server elsewhere. It can be locally and it can be somewhere on the internet. If you have a few tasty ideas of getting additional information along the way, please don't hesitate to show me I want it to log it to and use sendmail to alert me about a server not running, but this I've done several times before, so thats not needed either. Maybe something like (Not a wizard, please don't bash me) #!/bin/bash ping 8.8.8.8 if result = 4 numbers with . in between then /username/scripts/pingpong-isago.sh exit else /username/scripts/pingpong-isanogo.sh fi KR Dan
Code: #! /bin/bash set -x echo $1 ping -c 3 $1 RETVAL=$? echo $RETVAL if [ $RETVAL -eq 0 ] ; then echo "Ping successful" else echo "No answer to ping" fi Example use: Code: $ ./pinger.sh 8.8.8.8 + echo 8.8.8.8 8.8.8.8 + ping -c 3 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=55 time=36.1 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=55 time=37.0 ms 64 bytes from 8.8.8.8: icmp_seq=3 ttl=55 time=33.7 ms --- 8.8.8.8 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 33.731/35.656/37.076/1.420 ms + RETVAL=0 + echo 0 0 + '[' 0 -eq 0 ']' + echo 'Ping successful' Ping successful
