redshift 命令

常用示例

说明

redshift adjusts the color temperature of the screen based on time of day, reducing blue light exposure in the evening. This can help reduce eye strain and improve sleep quality by matching screen color to ambient lighting. During the day, the screen maintains normal color temperature (around 5500-6500K). As the sun sets, redshift gradually transitions to warmer colors (3000-4000K), reducing blue light that can interfere with circadian rhythms. Location can be determined automatically using geolocation services (geoclue) or specified manually. The program runs continuously, adjusting temperature throughout the day based on calculated sunrise and sunset times. Different backends support different display systems: randr for X11, wayland for Wayland compositors, and drm for console/framebuffer.

参数

-l _lat_:_lon_

Set location (latitude:longitude) for sunrise/sunset calculation

-t _day_:_night_

Set color temperature in Kelvin (default: 5500:3500)

-b _day_:_night_

Set screen brightness (0.1-1.0)

-O _temp_

Set specific color temperature immediately

-o

One-shot mode; set temperature and exit

-x

Reset color temperature to default

-p

Print current settings and parameters

-m _method_

Adjustment method (randr, vidmode, drm, wayland)

-g _r_:_g_:_b_

Set gamma correction

-r

Disable temperature transitions

-v

Verbose output

-c _file_

Load configuration from file