33 lines
880 B
Bash
33 lines
880 B
Bash
#!/bin/bash
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LOGFILE="/var/log/hostname.log"
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# Function to read the hostname from the DHCP lease file
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get_hostname() {
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sudo cat /var/lib/dhcp/* | grep -a "option host-name" | tail -1 | \
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awk -F '"' '{print $2}'
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}
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# Function to update /etc/hosts with the new hostname
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update_hosts() {
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local hostname="$1"
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# Replace the second line with the new hostname
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sudo sed -i "2s/.*/127.0.1.1 ${hostname}/" /etc/hosts
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echo "Updated /etc/hosts with hostname: $hostname" >> $LOGFILE
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}
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# Read the hostname from DHCP
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hostname=$(get_hostname)
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if [ -n "$hostname" ]; then
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update_hosts "$hostname"
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else
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echo "No hostname found." >> $LOGFILE
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fi
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# Log completion
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echo "Hostname update script completed." >> $LOGFILE
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# Version 1.0:
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# Created 2024 by Tim Eertmoed, Christian Hampp @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom pxe init script.
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