reducing power consumption

I was recently talking to Jean about lowering power consumption. One of the things I do is to purge all modules when I go to battery power. Here is the script I use to remove unwanted modules.

    lsmod | awk '/0 *$/ {print $1}' | xargs -n1 sudo rmmod

Building things as modules makes this more successful. And you have to run it a few times to get all the unused modules out. Maybe something like this would work…

    while lsmod | grep -q '0 *$' ; do
            lsmod | awk '/0 *$/ {print $1}' | xargs -n1 sudo rmmod
    done