TLDR
Enter a command. For example: pdfposter, gocryptfs, git worktree.

ybacklight

 
Manage screen backlight brightness. See also xbacklight. More information: https://github.com/pixelcmtd/ybacklight.
 
  • Print current brightness and maximal brightness, shortened and separated by a slash:
     
    ybacklight Sc/Sm
     
  • Set the brightness to 420:
     
    ybacklight s{{420}}
     
  • Increase the brightness by 42 big steps (4200 by default):
     
    ybacklight Si{{42}}
     
  • Decrease the brightness by 300:
     
    ybacklight d{{300}}

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