Shell Scripts February 24, 2008 0

Validate connection to remote host – Sprawdzanie łączności z hostem

A simple script to test connection to a remote host

#!/bin/bash 
n_sec=2 

#ping waits n of seconds 

REMOTE_HOST_IP=192.168.0.1   
ping -c $n_sec $REMOTE_HOST_IP >/dev/null   

if [ $? -eq 0 ]; 
  then echo "Ping OK" 
  else "Host is not available" 
fi   

#END-SCRIPT#

Below script will check the connection, if connection cannot be established for 30 seconds it will write results to root session screen. Very nice and small network monitor tool, which can be executed by e.g. a crontab.

#!/bin/bash   
/bin/ping -c1 -W30 192.168.0.1 > /dev/null 2>&1   
if [ $? != 0 ]; 
  then write root < /root/noconnect #this file stores the message 
fi   
#END-SCRIPT#

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