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Full Discussion: IP check with shell script
Top Forums Shell Programming and Scripting IP check with shell script Post 302285839 by bladez on Monday 9th of February 2009 08:21:48 PM
Old 02-09-2009
IP Check Shell Script

Yea i get IP via DHCP , well i am using D-Link switches with 24 pc's attached to it so sometimes som pc's doesnt get ip therefore i dun wan the pc to sit idle so at first yes i did thought of making it reboot but after i found the /etc/init.d/network start/stop i am gonna replace that with the reboot command instead so it will stop n start the NIC again untill it gets ip.

of course i did put this script after the NIC is started for the first time by the OS itself but then during the boot my script checks it to ensure it has IP n not jus loopback. coz i wanna ensure the pc is always on the network all the time.

there no other script that reboots the pc but the script that is below somehow something is wrong i dunno wat makes it keep restarting the network forever instead of checking whether it already has IP or not :


i hv a feeling that my code is wrong somewhr pls help... anyone.. Smilie..


Code:
 
 
if [!`hostname -i`] then
            /etc/init.d/network restart;
else
            echo "IP : `hostname -i`";
fi


Last edited by bladez; 02-10-2009 at 01:25 AM..
 

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fastboot(8)						      System Manager's Manual						       fastboot(8)

NAME
fastboot - Reboots the system without checking file systems SYNOPSIS
/usr/sbin/fastboot [-lnq] DESCRIPTION
The fastboot command reboots the system without checking file systems. The program creates the fastboot file then invokes the reboot pro- gram. The system start-up script contains instructions to look for the fastboot file. If present, the script removes the file and skips the invocation of the fsck command. You must have root privileges to use this command. FLAGS
Does not log the reboot or place a shutdown record in the accounting file. Does not sync the disks or log the reboot. Performs a quick reboot without first shutting down running processes; does not log the reboot. FILES
Specifies the command path RELATED INFORMATION
Commands: fsck(8), rc0(8), rc2(8), rc3(8), reboot(8), shutdown(8), syslogd(8) Functions: sync(2), syslog(3) delim off fastboot(8)
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