111 lines
2.4 KiB
Bash
111 lines
2.4 KiB
Bash
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#!/bin/sh
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function generate_hostname() {
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mac=$( ifconfig |grep eth0 | grep -io '[0-9a-f:]\{15\}[0-9a-f]\{2\}' )
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mac=${mac//:}
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nic=${mac:6}
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nic=$(( 16#$nic ))
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let length=32
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for i in 4 3 2 1 0; do
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let div=$length**$i
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let idx=$nic/$div
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let nic=$nic%$div
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if [ $idx = 0 ] ; then
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res=a
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elif [ $idx = 1 ] ; then
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res=b
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elif [ $idx = 2 ] ; then
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res=c
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elif [ $idx = 3 ] ; then
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res=d
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elif [ $idx = 4 ] ; then
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res=e
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elif [ $idx = 5 ] ; then
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res=f
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elif [ $idx = 6 ] ; then
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res=g
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elif [ $idx = 7 ] ; then
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res=h
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elif [ $idx = 8 ] ; then
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res=i
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elif [ $idx = 9 ] ; then
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res=j
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elif [ $idx = 10 ] ; then
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res=k
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elif [ $idx = 11 ] ; then
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res=m
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elif [ $idx = 12 ] ; then
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res=n
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elif [ $idx = 13 ] ; then
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res=p
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elif [ $idx = 14 ] ; then
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res=q
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elif [ $idx = 15 ] ; then
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res=r
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elif [ $idx = 16 ] ; then
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res=s
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elif [ $idx = 17 ] ; then
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res=t
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elif [ $idx = 18 ] ; then
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res=u
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elif [ $idx = 19 ] ; then
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res=v
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elif [ $idx = 20 ] ; then
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res=w
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elif [ $idx = 21 ] ; then
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res=x
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elif [ $idx = 22 ] ; then
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res=y
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elif [ $idx = 23 ] ; then
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res=z
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elif [ $idx = 24 ] ; then
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res=2
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elif [ $idx = 25 ] ; then
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res=3
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elif [ $idx = 26 ] ; then
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res=4
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elif [ $idx = 27 ] ; then
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res=5
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elif [ $idx = 28 ] ; then
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res=6
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elif [ $idx = 29 ] ; then
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res=7
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elif [ $idx = 30 ] ; then
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res=8
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elif [ $idx = 31 ] ; then
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res=8
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fi
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basex="$basex${res}"
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done
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old_hostname=$( cat /etc/hostname )
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new_hostname=unknown-$basex
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if [ $old_hostname = raspberrypi3-64 ]
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then
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new_hostname=rpi3-$basex
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fi
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if [ $old_hostname = raspberrypi4-64 ]
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then
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new_hostname=rpi3-$basex
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fi
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echo $new_hostname > /etc/hostname
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}
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FLAG="/var/local/firstboot.log"
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if [ ! -f $FLAG ]; then
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echo "First boot"
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touch $FLAG
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generate_hostname
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generate_avahi_service
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reboot
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fi
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