rrvsh/pantheon
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

feat(scripts): add byebye for easy poweroff

Browse source
This commit is contained in:
Mohammad Rafiq 2025-03-22 06:02:22 +08:00
parent 38e104606c
commit 5e8a013e11
No known key found for this signature in database
2 changed files with 43 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

40
users/modules/scripts/byebye.sh Normal file
View file

@ -0,0 +1,40 @@
# Set up the terminal to read input immediately, without waiting for Enter.
# This is done using the `stty` command.
# `stty` controls terminal settings.
# `-icanon` disables canonical mode. In canonical mode, the terminal buffers input until a newline is received. Disabling it makes input available immediately.
# `min 1` specifies that at least 1 character should be read.
# `time 0` specifies that the read should return immediately if a character is available.
stty -icanon min 1 time 0
# Prompt the user to enter 'y' or 'n' to confirm or cancel the poweroff.
# `echo -n` prints the prompt without a trailing newline, so the input will appear on the same line.
echo -n "Poweroff system? (y/n) [n]: "
# Read a single character from the input and store it in the 'answer' variable.
# `read -n 1 answer` reads only 1 character.
read -n 1 answer
# Print a newline character after the input has been read.
# This makes the output more readable, as the subsequent messages will appear on a new line.
echo
# Restore the terminal settings to their default values.
# This is important, as leaving the terminal in non-canonical mode can cause unexpected behavior.
# `stty icanon` re-enables canonical mode.
stty icanon
# Check the value of the 'answer' variable.
# `[[ ... ]]` is a more robust and feature-rich way to perform conditional tests than `[ ... ]`.
# `"y"` matches only the lowercase "y". If you want case-insensitive matching, consider using `[[ ${answer,,} == "y" ]]` (converts answer to lowercase).
if [[ "$answer" == "y" ]]; then
# If the user entered 'y', proceed with the poweroff.
echo "Powering off..."
# Execute the systemctl poweroff command with root privileges using sudo.
# `sudo` allows you to run commands as the superuser (root).
# `systemctl poweroff` sends the command to the systemd init system to shut down the machine.
sudo systemctl poweroff
else
# If the user entered anything other than 'y', cancel the poweroff.
echo "Poweroff cancelled."
fi