Satoshi Nakamoto motd-generator

Satoshi Nakamoto Message of the Day

Features

Displays a random quote from Satoshi Nakamoto. Includes Bitcoin ASCII art. Updates the MOTD at each login.

This project is a simple script to generate a Message of the Day (MOTD) with random quotes from Satoshi Nakamoto. The script displays the selected quote along with an Bitcoin ASCII art image whenever a user logs into the system. Written in pure Bash. No need to install any package. Tested with the Debian and Raspbian distributions.

Script Details

The script contains an array of quotes from Satoshi Nakamoto, the pseudonymous creator of Bitcoin. Each time a user logs in, the script randomly selects a quote and updates the /etc/motd file with the quote and Bitcoin ASCII art.

#!/bin/bash
quotes=(
    "A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution."
    ...
    "Writing a description for this thing for general audiences is bloody hard. There’s nothing to relate it to."
)

ascii_art=$(cat <<'EOF'
⠀⠀⠀⠀⣿⡇⠀⢸⣿⡇⠀⠀⠀⠀
⠸⠿⣿⣿⣿⡿⠿⠿⣿⣿⣿⣶⣄⠀
⠀⠀⢸⣿⣿⡇⠀⠀⠀⠈⣿⣿⣿⠀
⠀⠀⢸⣿⣿⡇⠀⠀⢀⣠⣿⣿⠟⠀
⠀⠀⢸⣿⣿⡿⠿⠿⠿⣿⣿⣥⣄⠀
⠀⠀⢸⣿⣿⡇⠀⠀⠀⠀⢻⣿⣿⣧
⠀⠀⢸⣿⣿⡇⠀⠀⠀⠀⣼⣿⣿⣿
⢰⣶⣿⣿⣿⣷⣶⣶⣾⣿⣿⠿⠛⠁
⠀⠀⠀⠀⣿⡇⠀⢸⣿⡇⠀⠀
EOF
)

# Get a random quote
RANDOM=$$$(date +%s)
selected_quote=${quotes[$RANDOM % ${#quotes[@]}]}

# Write the quote to /etc/motd
echo "$ascii_art" | tee /etc/motd > /dev/null
echo "" | tee -a /etc/motd > /dev/null
echo "$selected_quote" | fold -s -w 80 | tee -a /etc/motd > /dev/null
echo "                        Satoshi Nakamoto" | tee -a /etc/motd > /dev/null
echo "" | tee -a /etc/motd > /dev/null

Installation

Clone the repository.

git clone https://github.com/mikorist/satoshi-motd-generator.git
cd satoshi-motd-generator

Move the script to /usr/local/bin

sudo mv motd-generator.sh /usr/local/bin/motd-generator.sh
sudo chmod +x /usr/local/bin/motd-generator.sh

Modify /etc/profile to include the MOTD script Add the following line to /etc/profile:

echo '/usr/local/bin/motd-generator.sh' | sudo tee -a /etc/profile

This ensures that the MOTD script runs each time a user logs in.

You can remove the "last login" information. Disable the PrintLastLog option from the sshd service. Edit the /etc/ssh/sshd_config file and uncomment the line #PrintLastLog yes:

sudo nano /etc/ssh/sshd_config

Before:

#PrintLastLog yes

After:

PrintLastLog no

Restart the sshd service:

sudo systemctl restart sshd

Verify the MOTD

Log out and log back in to see the MOTD update with a random Satoshi Nakamoto quote.

Contributing

Feel free to contribute by submitting pull requests to enhance the script, add more quotes, or improve the documentation.

License

This project is licensed under the MIT License.