如何修改电脑关机提示信息（例如"Goodbye, (username)"）？

Hey there! Changing that custom shutdown greeting like "Goodbye, [username]" is totally achievable—just depends on which operating system you're using. Let's walk through the steps for the two most common setups:

⚠️ Important note: Always back up your registry before making changes! Incorrect edits can cause system stability issues.

• Press Win + R, type regedit, and hit Enter to open the Registry Editor (you'll need admin rights for this).
• Navigate to this path:

  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Shutdown
  

• If the Shutdown key doesn't exist: Right-click on LogonUI → New → Key, name it Shutdown.
• Inside the Shutdown key, right-click an empty space → New → String Value, name it AlternateShutdownMessage.
• Double-click the new string value, paste your custom message (e.g., "See you later! Have an awesome day!") in the "Value data" field, then click OK.
• Log out and shut down—your new greeting should show up!

Linux has two scenarios to consider: graphical desktop shutdown prompts and terminal-based shutdown messages.

GNOME Desktop (Most common for Ubuntu, Fedora, etc.) #

• The shutdown message is controlled by GDM (GNOME Display Manager). Open a terminal and run:

  sudo nano /etc/gdm3/greeter.dconf-defaults
  

• Look for a line like # shutdown-message='Goodbye'—remove the # to uncomment it, then replace the text inside the quotes with your custom message:

  shutdown-message='Catch you next time!'
  

• Save and exit Nano with Ctrl+O (press Enter to confirm) then Ctrl+X.
• Restart GDM to apply changes:

  sudo systemctl restart gdm3
  

• Log out and shut down to see your new greeting.

Note: For KDE Plasma, head to System Settings → Workspace Behavior → Screen Locking (or similar) to find shutdown message options, or edit ~/.config/plasma-workspace/shutdown for more advanced tweaks.

Terminal Shutdown Messages #

If you want a custom message when using the shutdown command in the terminal:

• To add a one-time message, use:

  shutdown -h +5 "Time to wrap up! System will shut down in 5 minutes."
  

• To set a default message for every terminal shutdown, edit your shell config file (e.g., ~/.bashrc for Bash, ~/.zshrc for Zsh):
  1. Open the file with:

     nano ~/.bashrc
     

  2. Add this line at the bottom:

     alias shutdown='shutdown -h now "Your custom goodbye message here"'
     

  3. Save and exit, then run source ~/.bashrc to apply the change immediately.

Hope that helps! If you run into snags with a specific OS or desktop environment, feel free to follow up.

内容的提问来源于stack exchange，提问作者Psionikal