redshift

Redshift is a command line tool that adjusts the color temperature of the screen based on the time of day to reduce eye strain and promote better sleep. It works by modifying the color temperature of the display, making it warmer during evening and night hours and cooler during daytime. Redshift applies a color transformation to the whole screen, gradually transitioning from the default color temperature to the adjusted temperature. The tool takes into account the user's location and the current time to determine the appropriate color temperature settings. Redshift can be customized with various parameters such as latitude and longitude to accurately calculate the sunrise and sunset times for the location. It supports multiple color temperature presets and allows users to specify the desired transition speed. Redshift can be used with various desktop environments and window managers, making it versatile and popular among Linux users. It is highly configurable through a corresponding configuration file, allowing users to fine-tune the color temperature behavior to their liking. Redshift can be scheduled to start automatically during system boot or run as a daemon in the background. Overall, Redshift is a valuable tool for users looking to reduce eye strain and promote better sleep by adjusting the color temperature of their screens.