postIt

Arif

• 06:39:59 am on January 10, 2012 | # | 0
  Tags: device, shell script

  Checking whether /dev/video0 or /dev/ttyUSB0 exists or not (module is installed & probed). They're recognized as "character special file" in bash

  [ -b /dev/ttyUSB0 ] && echo "char special file found" || echo "char special file not found"

  Compare the above to "block special file"

  [ -b /dev/sda ] && echo "block special file found" || echo "block special file not found"

   

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