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Revision as of 12:09, 10 June 2013 by Fengchao (Talk | contribs)

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I just wanted to add that echo and > resulted in permission denied on my sistem, for that I would suggest using pipe and tee like "echo 5 | sudo tee /sys/class/backlight/acpi_video0/brightness" which works well. If combined with passwordless sudo it can be used to automate brightness setting upon login. (Didn't want to edit the actual page without any experience) Szebenyib (talk) 20:34, 7 June 2013 (UTC)

# means command should be run using root. See Help:Reading and Help:Style.