Redshift是Ubuntu下非常好用的护眼软件，默认的色温设置值为6500K，对于长时间在电脑前工作的我来说，这个色温仍然显得太刺眼，于是通过redshift.conf来进行配置。

Redshift默认没有配置文件redshift.conf，需要自行创建，路径如下：

/home/用户名/.config/redshift.conf

编辑redshift.conf，内容示例：

;[redshift]
; 设置白天和晚上的屏幕温度（中性为6500k）
; 在2700K/6300K色温下更容易造成视疲劳
;temp-day=5800
;temp-night=4500

; 逐渐增强或降低屏幕的温度，平滑过渡
;transition=1

; 设置位置提供者为manual
;location-provider=manual

; 设置randr调整方法
;adjustment-method=randr

;[manual]
; 上海的经纬度
;lon=121.47
;lat=31.23

; 调整屏幕'0',从0开始
;[randr]
;screen=0





;[redshift]
; 白天屏幕温度
;temp-day=4500
; 夜晚屏幕温度
;temp-night=3500
; 昼夜是否平滑过度(1/0)
;transition=1

; 位置提供方式(redshift -l list)
;location-provider=manual

;[manual]
; 经纬度
;lat=31
;lon=121





; Global settings for redshift
[redshift]
; Set the day and night screen temperatures
temp-day=5000
temp-night=3500
 
; Enable/Disable a smooth transition between day and night
; 0 will cause a direct change from day to night screen temperature.
; 1 will gradually increase or decrease the screen temperature.
transition=1
 
; Set the screen brightness. Default is 1.0.
;brightness=0.9
; It is also possible to use different settings for day and night
; since version 1.8.
;brightness-day=0.7
;brightness-night=0.4
; Set the screen gamma (for all colors, or each color channel
; individually)
gamma=0.8
;gamma=0.8:0.7:0.8
; This can also be set individually for day and night since
; version 1.10.
;gamma-day=0.8:0.7:0.8
;gamma-night=0.6
 
; Set the location-provider: geoclue, geoclue2, manual
; type redshift -l list to see possible values.
; The location provider settings are in a different section.
location-provider=manual
 
; Set the adjustment-method: randr, vidmode
; type redshift -m list to see all possible values.
; randr is the preferred method, vidmode is an older API.
; but works in some cases when randr does not.
; The adjustment method settings are in a different section.
adjustment-method=randr
 
; Configuration of the location-provider:
; type redshift -l PROVIDER:help to see the settings.
; ex: redshift -l manual:help
; Keep in mind that longitudes west of Greenwich (e.g. the Americas)
; are negative numbers.
[manual]
lon=121.47
lat=31.23
 
; Configuration of the adjustment-method
; type redshift -m METHOD:help to see the settings.
; ex: redshift -m randr:help
; In this example, randr is configured to adjust screen 1.
; Note that the numbering starts from 0, so this is actually the
; second screen. If this option is not specified, Redshift will try
; to adjust _all_ screens.
[randr]
screen=0

 

经纬度可以通过百度地图等工具来获取，配置完成后重启一下Redshift。