I am trying to get my hands dirty with bash scripting and dmesg. I want to write a script which does the following :
When the mouse is plugged in, and your script is run, it will print “mouse is present” when the mouse is unplugged and the script is run, it will say “mouse is not present”.
Here is the bash script that I came up with (This is my first bash script so please go easy :P)
#!/bin/bash touch search_file.txt FILENAME=search_file.txt while true do dmesg -w > search_file.txt # read for changes in the kernel ring buffer and write to a file if grep -Fxqi "mouse|disconnect" "$FILENAME" # look for the keywords then echo "Mouse is disconnected" else echo "Mouse is connected" fi done
I tried running this but I don’t see the desired output.
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