This script shows Raspberry Pi unique ID's (with additional verifications):
- CPU serial
- embedded MAC addresses (Ethernet and Wireless).
If -r or --raw option specified output will be without name prefixes.
By default Ethernet MAC calculated from Raspberry Pi Foundation registered
MAC prefix (b8:27:eb:) and CPU serial number, but you can force Ethernet MAC
check by -f or --force-ethernet-check option, in this case ethtool package
required to get real Ethernet MAC.
It's generally recommended to have "ethtool" because sometimes real wireless MAC address cannot be identified via sysfs.
Exit codes:
- 0: success (all values correct for sure)
- 2: error (some values are incorrect for sure)
- 127: invalid options
- 128: warning (some values are not trusted, can be valid but can be invalid as well)
- all others are script failure (should never occur)
Single line alternatives without additional checks assuming that embedded interfaces are eth0 and wlan0 and MAC addresses was not changed:
echo -n 'CPU serial: '; cat /proc/device-tree/serial-number; echo -n $'\n''Ethernet MAC: '; cat /sys/class/net/eth0/address; echo -n 'Wireless MAC: '; cat /sys/class/net/wlan0/address
echo "CPU serial: $(read c </proc/device-tree/serial-number; echo $c)"$'\n'"Ethernet MAC: $(</sys/class/net/eth0/address)"$'\n'"Wireless MAC: $(</sys/class/net/wlan0/address)"