$ uname -a
Linux RPi 3.1.19 #1 PREEMPT Fri Jun 1 14:16:38 CEST 2012 armv6l GNU/Linux
顯示目前 firmware 的版本:
$ /opt/vc/bin/vcgencmd version
Feb 4 2015 21:04:27
Copyright (c) 2012 Broadcom
version 115f63aa0915cdb5b6dff23822eb16699b72ae8b (clean) (release)
ref: http://elinux.org/R-Pi_Troubleshooting#Check_your_firmware_version