The following script let you turn your screen brightness up\/down, but also adjust the color for night time.<\/p>\n\n\n\n
Copy and paste code below in a nightlight.sh file<\/p>\n\n\n\n
chmod +x nightlight.sh<\/pre>\n\n\n\nand run<\/p>\n\n\n\n
.\/nightlight.sh on .5<\/pre>\n\n\n\nCode:<\/p>\n\n\n\n
#!\/bin\/sh\nexport DISPLAY=$(w $(id -un) | awk 'NF > 7 && $2 ~ \/tty[0-9]+\/ {print $3; exit}')\nPATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin:\/usr\/games:\/usr\/local\/games\n\ndisplay=`xrandr | grep \"\\ connected\" | cut -d\" \" -f1<\/code><\/code>`\nbrightness=\"$2\"\n# Check if brightness was specified. If not, set screen to 50% brightness\nif (echo $2 | grep [0-9]);then\n brightness=\"$2\"\nelif (echo $1 | grep -q help);then\n echo \"############\"\nelse\n brightness=\".5\"\n echo \"Brightness variable not set, setting to fallback of 50%\"\nfi\nnight_mode() {\n for disp in ${display}; do\n xrandr --output $disp --gamma $1 --brightness ${brightness}\n done }\n# auto is for future development\n# auto() {\n# The idea behind auto is to setup something that can pull the actual sunrise\/sunset times then automatically adjust the display.\n# Ideally there would be an algorithm so it does it slowly over a period of time, say slightly change the color over 30 minutes.\n# until the desired color limit is reached\n#\n# curl sunrise-sunset.com\/timezone\/time\n# if (time > sunset && colorTemp != colorTempMin); then\n# set color to current temp-1\n# elif (time > sunrise && colorTemp != colorTempMax); then);\n# set to full brightness and temp\n# else\n# unable to parse, skipping.\n# fi\n#}\n \nhelp() {\necho \" Help for nightmode script. \nHow to run script\n.\/nightmode.sh on\/off brightness\nExamples: \nTurn nightmode on and set screen brightness to 75%\n.\/nightmode.sh on .75\nTurn night mode off and set screen brightness to 100%\n.\/nightmode.sh off 1\n\"\n}\ncase $1 in\n off) night_mode 1:1:1 1.0 ;;\n help) help ;;\n auto) auto ;;\n *) night_mode 1:1:0.5 ;;\nesac<\/pre>\n\n\n\nSetup in crontab to automatically trigger when it gets night or morning<\/p>\n\n\n\n
* 21 * * * ~\/nightlight.sh on .5 # Turn on at night\n* 7 * * * ~\/nightlight.sh off 1 # Turn off in the morning<\/pre>\n","protected":false},"excerpt":{"rendered":"The following script let you turn your screen brightness up\/down, but also adjust the color for night time. Copy and paste code below in a nightlight.sh file chmod +x nightlight.sh and run .\/nightlight.sh on .5 Code: #!\/bin\/sh export DISPLAY=$(w $(id … Continue reading