hukruto.blogg.se - Dell laptop turn off keyboard backlight

Lockfile /home/greys/scripts/backlight/backlight.kbd found, skipping action.

HOUR 00 is rather late! Must turn on backlightĬurrent backlight 2 is different from desired backlight 3 Log file looks like this: :~/scripts $ tail backlight/backlight.log

all actions are added to the $WORKDIR/backlight.log file.

Otherwise, we set the backlight to new value.

If a recent enough file exists, we skip updates.

if we need to update keyboard backlight setting, we check for lockfile.

it compares this status to the desired state (based on which hour that is).

if checks current keyboard backlight status ($KDBBACKLIGHT variable).

For now I’ve set it between 21 (9pm) and 4 (4am, that is)

it confirms current hour and checks if it’s a rather late hour (when it must be dark).

it checks for lock file backlight.kbd in the same $WORKDIR.

it starts writing log file backlight.log in that $WORKDIR.

it determines the WORKDIR (I defined it as /home/greys/scripts/backlight).

This is what my script does when you run it as root (it won’t work if you run as regular user): No action needed" | tee -a $LOGFILEįi How My Dell Keyboard Backlight Script Works If thenĮcho "Current backlight $KBDBACKLIGHT is different from desired backlight $BACKLIGHT" | tee -a $LOGFILEįILE=`find $`Įcho "No lock file! Updating keyboard backlight" | tee -a $LOGFILEĮcho $BACKLIGHT > /sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/brightnessĮcho "Lockfile $FILE found, skipping action." | tee -a $LOGFILEĮcho "Current backlight $KBDBACKLIGHT is the same as desired. KBDBACKLIGHT=`cat /sys/devices/platform/dell-laptop/leds/dell::kbd_backlight/brightness`Įcho "->" | tee -a $LOGFILEĮcho "HOUR $HOUR is rather late! Must turn on backlight" | tee -a $LOGFILEĮcho "HOUR $HOUR is not too late, must turn off the backlight" | tee -a $LOGFILE Bash Script for Keyboard Backlight ControlĪs I’ve written just a couple of days ago, it’s actually quite easy to turn keyboard backlight on or off on a Dell XPS in Linux (and this probably works with other Dell laptops).Īrmed with that knowledge, I’ve written the following script: #!/bin/bash I have writted a basic enough script that can be added as root cronjob for automatically controlling keyboard backlight on my Dell XPS 9380. Last night I finished a fun mini project as part of Unix Tutorials Projects.