1- save the script below as brightness.py
#!/usr/bin/python
import sys
import os
brifile = "/sys/class/backlight/intel_backlight/brightness"
if len(sys.argv) > 1:
brlevel = sys.argv[1]
if int(brlevel) >= 0 and int(brlevel) <= 5273:
os.system("echo "+brlevel+" > " + brifile)
else:
print "range from 0 to 5273"
else:
os.system("echo 1000 > " + brifile)
2- usages
- set brightness to 2000, possible input from 0 to 5273"
$ sudo python brightness.py 2000
- if no input the default value is 1000
$ sudo python brightness.py
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