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tinyboard/autohostname.sh
2026-04-11 12:55:44 -07:00

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#!/usr/bin/env bash
# Copy this along with .not_logged_in_yet to armbian root dir, then run after successful login
# Refresh: extract MAC address of wlan0
MAC=$(netplan status -f json | jq -r '.wlan0.macaddress')
# Check that we actually got a MAC address
if [[ -z "$MAC" ]]; then
echo "Error: Could not retrieve MAC address from netplan." >&2
exit 1
fi
echo "Detected MAC address: $MAC"
# Assign cheese hostname based on MAC address
case "$MAC" in
38:9c:80:46:26:c8) # ← Replace with your first real MAC
HOSTNAME="brie"
;;
68:f8:ea:22:e1:3d) # ← Replace with your second real MAC
HOSTNAME="gouda"
;;
99:88:77:66:55:44) # ← Replace with your third real MAC
HOSTNAME="camembert"
;;
*)
echo "Unknown MAC address: $MAC hostname not changed." >&2
exit 1
;;
esac
echo "Setting hostname to: $HOSTNAME"
sudo hostnamectl set-hostname "$HOSTNAME"
# Optional: also update /etc/hostname (hostnamectl usually does this, but to be safe)
echo "$HOSTNAME" | sudo tee /etc/hostname >/dev/null
echo "Hostname changed. Reboot or start a new shell to see the change."