Raspberry Pi
From Christoph's Personal Wiki
This article will be all about my Raspberry Pi projects.
Miscellaneous
- Find Raspberry Pi IP address on your local WiFi network:
$ sudo nmap -sP 10.0.0.0/24 | awk '/^Nmap/{ip=$NF}/B8:27:EB/{print ip}' #~OR~ IFACE=eth0 # trigger IPv6 neighbour discovery with link-local scope multicast: ping6 -c2 -I $IFACE ff02::1 > /dev/null # print the results, filtered by MAC address vendor prefix of Raspberry Pi Foundation: ip -6 neigh | grep b8:27:eb #~OR~ $ arp-scan --interface=eth0 --localnet | grep b8:27:eb
- Store the following in your
~/.ssh/config
file:
Host rpi HostName 10.x.x.x User pi ProxyCommand none TCPKeepAlive yes ServerAliveInterval 5 PubkeyAuthentication no PreferredAuthentications keyboard-interactive,password
Then,
$ ssh rpi
Or, better yet, use SSH keys.
- Find out where your Raspberry Pi was made and other details about the hardware:
$ cat /proc/cpuinfo | grep -E '^Hardware|^Revision|^Serial' Hardware : BCM2835 Revision : a22082 Serial : 0000000038e10351
Then, go here or here and, using the above hardware/revision codes, find out where you RPi was made.
So, in my case, I have a Raspberry Pi 3 Model B manufactured by Embest in 2016 (Q1).
32-bit or 64-bit
$ arch || uname -a armv7l # <- 32-bit => ARMv7 Processor rev 4 (v7l) armv8 # <- 64-bit => ARMv8 Processor
$ tr '\0' '\n' </proc/device-tree/model;arch Raspberry Pi 3 Model B Rev 1.2 armv7l
$ getconf LONG_BIT 32 # <- 32-bit 64 # <- 64-bit
$ dpkg --print-architecture armhf
Useful commands
- Check which network the wireless adaptor is using:
$ iwconfig
- Print a list of the currently available wireless networks:
$ iwlist wlan0 scan
- Show details about the device's memory:
$ cat /proc/meminfo
- Show the size and number of partitions on the SD card or hard drive:
$ cat /proc/partitions
- Show which version of the Raspberry Pi you are using:
$ cat /proc/version
- Show all of the installed packages that are related to XXX:
$ dpkg --get-selections | grep XXX
- Show all of the installed packages:
$ dpkg --get-selections
- Show the IP address of the Raspberry Pi:
$ hostname -I
- List USB hardware connected to the Raspberry Pi:
$ lsusb
- Show the temperature of the CPU:
$ vcgencmd measure_temp
- Show the memory split between the CPU and GPU:
$ vcgencmd get_mem arm && vcgencmd get_mem gpu