night_light.sh

Automatic night light script for gnome

Script to adjust night light in gnome

• Automatically adjusts night light based on local time. (default 24 hour clock) Use: -12 as argument to set to 12 hours, or set CLOCK=12 in script. (WIP)
• Toggles dark/light mode based on time of day (light in the morning and dark in the night)
  • Using dark-toggle

Installation

Download and symlink script

curl -sSL -o ~/.scripts/night_light.sh  https://raw.githubusercontent.com/tmiland/night_light.sh/main/night_light.sh

Symlink:

 ln -sfn ~/.scripts/night_light.sh ~/.local/bin/night_light

Now use

$ night_ligh <value>

to set temp based on values:

1000 — Lowest value (super warm/red)
4000 — Default night light on temperature
5500 — Balanced night light temperature
6500 — Default night light off temperature
10000 — Highest value (super cool/blue)

Source: https://www.omgubuntu.co.uk/2017/07/adjust-color-temperature-gnome-night-light

Usage: [options]

If called without arguments, uses 24 hour clock.

 --24hour            | -24           use 24 hour clock
 --12hour            | -12           use 12 hour clock (WIP) (NOT WORKING)
 --light-enabled     | -le           turn on/off (true/false)
 --light-temperature | -lt           show light-temperature
 --dark-toggle       | -dt           toggle dark/light color scheme

• Or install with crontab contab -e and add to new line

1 * * * * bash ~/.scripts/night_light.sh > /dev/null 2>&1

Or with systemd: /etc/systemd/system/timers.target.wants/night_light.timer

[Unit]
Description=Automatically adjusts night light based on local time.
Requires=night_light.service

[Timer]
Unit=night_light.service
OnCalendar=hourly
AccuracySec=60s
Persistent=true

[Install]
WantedBy=timers.target

/etc/systemd/system/night_light.service

[Unit]
Description=Logs system statistics to the systemd journal
Wants=night_light.timer

[Service]
Type=oneshot
ExecStart=/bin/bash $HOME/.scripts/night_light.sh

[Install]
WantedBy=multi-user.target

systemctl enable night_light.{service,timer} && \
systemctl start night_light.{service,timer} && \
systemctl status night_light.{service,timer}

Compatibility and Requirements

• Gnome desktop

Credits

• Based on source
• dark-toggle

Disclaimer

*** Use at own risk ***

License

MIT License