Custom MOTD Script

This script displays system information upon user login, offering insights into system status and resource usage.

Features

• Operating System Details: Displays the OS name and version.
• Hostname and Kernel Version: Shows the system's hostname and kernel version.
• Uptime and User Information: Indicates system uptime and current user details.
• Shell and Terminal Info: Provides information about the user's shell and terminal.
• Hardware Specifications: Lists CPU and GPU details.
• Memory Usage: Displays current memory usage.
• System Load: Shows the current system load average.
• IP Address: Displays the system's IP address.
• Disk and Swap Usage: Indicates usage statistics for disk and swap space.
• Active Users and Processes: Lists the number of active users and running processes.

Prerequisites

Ensure the following commands are available on your system:

• hostnamectl
• uname
• free
• awk
• lscpu
• lspci
• uptime
• ip
• df
• ps
• tty
• date

Installation

1. Download the Script:

   sudo wget -O /etc/profile.d/mymotd.sh https://raw.githubusercontent.com/marinnedea/custom-motd/master/mymotd.sh

2. Make the Script Executable:

   sudo chmod +x /etc/profile.d/mymotd.sh

Testing the Script

To test the script without logging out and back in:

sh /etc/profile.d/mymotd.sh

Customization

• Color Scheme: The script uses color formatting suitable for dark backgrounds. If you use a light background, adjust the ANSI color codes in the script to ensure readability.

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Below is a sample Light Background Color Scheme

• Blue (for headers): Use \e[1;34m → \e[1;36m (cyan).
• Reset: Use \e[0m (no change, as it resets all styles).
• Yellow (optional highlights): Use \e[1;33m.

Replace the relevant sections in the script to use the light background color scheme:

printf "\n"
printf "\e[1;36mOS:\e[0m %s\n" "$os_release"
printf "\e[1;36mHostname:\e[0m %s\n" "$host_name"
printf "\e[1;36mKernel:\e[0m %s\n" "$kernel_vers"
printf "\e[1;36mUptime:\e[0m %s\n" "$showup"
printf "\e[1;36mYou are logged in as:\e[0m %s\n" "$iam"
printf "\e[1;36mYour working directory is:\e[0m %s\n" "$mywd"
printf "\e[1;36mShell:\e[0m %s %s\n" "$shellinfo" "$shellvers"
printf "\e[1;36mTerminal:\e[0m %s\n" "$terminfo"
printf "\e[1;36mCPU:\e[0m %s\n" "$cpu"
[ -n "$gpu" ] && printf "\e[1;36mGPU:\e[0m %s\n" "$gpu"
printf "\e[1;36mMemory:\e[0m %s\n" "$memory"

Notes:

• The cyan color (\e[1;36m) works well on light backgrounds without causing eye strain.
• If you want further customization (like specific colors for different sections), consider ANSI codes like \e[0;31m for red or \e[0;32m for green.
• Use tput to test colors interactively:

  tput setaf <color-code>

Color Code Reference

Color	ANSI Code	Preview
Black	\e[0;30m	⬛ Black
Red	\e[0;31m	🟥 Red
Green	\e[0;32m	🟩 Green
Yellow	\e[0;33m	🟨 Yellow
Blue	\e[0;34m	🟦 Blue
Magenta	\e[0;35m	🟪 Magenta
Cyan	\e[0;36m	🟦 Cyan
White	\e[0;37m	⬜ White
Bold	\e[1m	Bold
Reset	\e[0m	(resets style)

Notes:

• The Preview column uses colored emojis to simulate the respective ANSI colors. While not perfectly accurate, it gives a clear visual representation.

Test your MOTD script after applying these changes to ensure the new color scheme suits your preferences.

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Disclaimer

This script is provided "as is" without any warranty. Use it at your own risk.