6

About redshift:

Redshift adjusts the color temperature of your screen according to your surroundings.

A typical redshift command that I use is redshift -O 9999 which sets the screen color temperature at 9999K. Following a polyphasic sleep schedule, I prefer to change my screen color a few times a day.

So here's part of my crontab:

LOW='redshift -O 1000'
HIGH='redshift -O 9999'

30 4 * * * $LOW
45 12 * * * $LOW
45 20 * * * $LOW
0 6,15,23 * * * $HIGH

It doesn't do anything. I checked the syslog, it does run, but when I catch the output in a file, the file is empty.

Why does this not work? Are there any alternatives to Redshift I could try?

John Smith
  • 180
ToonAlfrink
  • 130

1 Answers1

6

Thanks Dan D. This worked:

LOW='redshift -O 1000'
HIGH='redshift -O 9999'
DISPLAY=:0.0

30 4 * * * $LOW
45 12 * * * $LOW
45 20 * * * $LOW
0 6,15,23 * * * $HIGH
ToonAlfrink
  • 130