Raspberry Pi OS - Linux environment setup

🚩 Raspberry Pi OS setup.

Author

Kevin DOOLAEGHE

Setup

Download and install the system

Burn the Raspberry Pi OS 64bit (Lite) image using Raspberry Pi Imager software on your .

⚠️ Configure the default system settings (hostname, user, network, timezone, SSH and telemetry) using the Ctrl+Shift+X keyboard shortcut.

Configure the network access

If this is not already done, configure the network access :

1. Verify that the NetworkManager service is running :

sudo systemctl status NetworkManager

📝 The default network manager is NetworkManager on Raspberry Pi OS.

2. Rename and edit the default NetworkManager configuration file named preconfigured.nmconnection :

sudo mv /etc/NetworkManager/system-connections/preconfigured.nmconnection /etc/NetworkManager/system-connections/wlan0.nmconnection
sudo nano /etc/NetworkManager/system-connections/wlan0.nmconnection

3. Update the configuration of the wlan0 interface :

• Update the id of the interface :

[connection]
id=wlan0

📝 The uuid field of the connection is given using the command nmcli con show.

• Update the ipv4 section to configure static network settings :

[ipv4]
method=manual
address1=10.0.0.252/24,10.0.0.254
dns=10.0.0.254;8.8.8.8;

4. Restart the NetworkManager service :

sudo systemctl restart NetworkManager

Update the system

Update and upgrade Raspberry Pi OS using the following commands :

sudo apt-get update
sudo apt-get upgrade -y
sudo reboot

Execute commands as administrator without password

echo "kevin ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/010_kevin-nopasswd

Update the MOTD banner

1. Clear the /etc/motd file :

cat /dev/null | sudo tee /etc/motd

2. Open the /etc/update-motd.d/20-sysinfo file :

sudo nano /etc/update-motd.d/20-sysinfo

3. Copy & paste the following content then save the file using Ctrl+X :

#!/bin/bash

# date
date=`date +'%A,%e %B %Y, %r'`
# system
system=`uname -srmo`
# uptime
uptime=`cut -d. -f1 /proc/uptime | awk '{printf "%d days", $1/86400}'`
rebootDate=`uptime -s`
# memory
read usedMem totalMem usedMemPercent <<< `free | grep Mem | awk '{printf "%.2f %.2f %.2f", $3/1024, $2/1024, $3/$2*100}'`
memory="${usedMemPercent}% used (${usedMem} MB / ${totalMem} MB)"
# load average
read load1m load5m load15m _ < /proc/loadavg
loadAverage="${load1m}%, ${load5m}%, ${load15m}% (1, 5, 15 min.)"
# running processes
runningProcesses=`ps ax | wc -l | tr -d ' '`
# network
eth0IpAddress=`ip addr show eth0 | grep 'inet ' | awk '{print $2}' | cut -f1 -d'/'`
wlan0IpAddress=`ip addr show wlan0 | grep 'inet ' | awk '{print $2}' | cut -f1 -d'/'`
network="eth0: $([[ ! -z "$eth0IpAddress" ]] && echo "$eth0IpAddress" || echo "none"), wlan0: $([[ ! -z "$wlan0IpAddress" ]] && echo "$wlan0IpAddress" || echo "none")"

echo "$(tput setaf 2)
   .~~.   .~~.
  '. \ ' ' / .'   $(tput setaf 3; tput blink)${date}$(tput sgr0; tput setaf 2)
   .~ .~~~..~.    $(tput setaf 3; tput blink)${system}$(tput sgr0; tput setaf 1)
  : .~.'~'.~. :
 ~ (   ) (   ) ~  $(tput sgr0)Uptime.............: running since ${rebootDate} (${uptime})$(tput setaf 1)
( : '~'.~.'~' : ) $(tput sgr0)Memory.............: ${memory}$(tput setaf 1)
 ~ .~ (   ) ~. ~  $(tput sgr0)Load Average.......: ${loadAverage}$(tput setaf 1)
  (  : '~' :  )   $(tput sgr0)Running Processes..: ${runningProcesses} processes$(tput setaf 1)
   '~ .~~~. ~'    $(tput sgr0)Network............: ${network}$(tput setaf 1)
       '~'
$(tput sgr0)"

4. Give execution permissions to the script :

sudo chmod +x /etc/update-motd.d/20-sysinfo

Setup the Docker environment

1. Clone this repository :

git clone https://github.com/kevin-doolaeghe/myapps.git

2. Setup the Docker environment :

cd myapps/
make

References

• Raspberry Pi OS website
• Docker setup script