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Thoughts about technical things

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Monthly Archives: May 2012

How to tell if my DHCP ipaddress has changed

A line of script to send you an email if your DHCP allocated IP address has changed. Either run it from a cron or put it in /etc/rc.local ls -rt /var/lib/dhcp/dhclient*eth0* | xargs grep fixed-address | tail -2 | awk ‘{print $3}’ | xargs echo -n | sed -e ‘s/;//g’ | awk ‘{if ($1 != […]

Posted byadmin.ianMay 4, 2012Posted inLinux, UbuntuLeave a comment on How to tell if my DHCP ipaddress has changed

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