Index

redshift

redshift all monitors with default/configured settings
redshift
redshift with selected temperature (0-6500)
redshift -O [temperature]
only change specified monitor
redshift  -m randr:crtc=0 -O 4000

https://wiki.archlinux.org/index.php/Redshift
https://help.ubuntu.com/community/Redshift
official website
http://jonls.dk/redshift/