redshift:tldr:5e9f2

The command redshift -g ${red}:${green}:${blue} is used to run the redshift program with a specific color temperature.

Here's a breakdown of the command:

• redshift is the name of the program that adjusts the color temperature of the screen to reduce eye strain and promote better sleep.
• -g is an option/flag used to set the color temperature via command-line.
• ${red}:${green}:${blue} are variables enclosed in ${} that represent the values of red, green, and blue color components used to set the color temperature. These variables should be replaced with specific values.

The color temperature values for red, green, and blue can usually be specified in the range of 0 to 255, where 0 represents no presence of the color and 255 represents full presence. By adjusting these color component values, you can customize the screen's color temperature to a desired warmth or coolness.