Disable spindown

#!/bin/sh
# Based on https://serverfault.com/questions/1047331/how-do-i-disable-hard-disk-spin-down-or-head-parking-in-freebsd

for i in /dev/da* ; do
    dev=`basename $i`
    if (camcontrol identify $dev | tr -s '[:space:]' | tr '\t' ' ' | grep "advanced power management yes" >/dev/null) ; then
        echo "Disabling APM for $dev"
        camcontrol apm $dev
    fi
    if (camcontrol identify $dev | tr -s '[:space:]' | tr '\t' ' ' | grep "extended power conditions yes yes" >/dev/null) ; then
        echo "Enabling EPC for $dev"
        camcontrol epc $dev -c enable
        for state in standby_z idle_b idle_c standby_y ; do
            echo "Disabling EPC $state for $dev"
            camcontrol epc $dev -c state -d -p $state
        done
    fi
done