macbook_sleep

#!/bin/sh
# script to change the sleep mode of an OS X machine

usage () {
    echo "supported sleep modes:"
    echo "    sleep"
    echo "    safesleep"
    echo "    hibernate"
    echo "    secure"
    echo "    insecure"
    echo "    current"
    echo
    echo "sleep (or old-style sleep) does not back up memory to disk. this is"
    echo "useful if you are running out of hard drive space, but will eat"
    echo "more battery and if the system runs out of power, the current state"
    echo "is lost."
    echo
    echo "safesleep backs up memory to persistent storage, taking as much disk"
    echo "space as the system has memory. this uses more disk space and more"
    echo "battery, as memory is powered during sleep. If the battery is"
    echo "exhausted, the system will hibernate."
    echo
    echo "hibernate writes memory to persistent storage, and powers down the"
    echo "machine. the sleep image takes up as much space as the system has"
    echo "memory. While sleeps/wakes are slower, battery life is much improved"
    echo "as memory is not powered during sleep."
    echo
    echo "secure mode destroys the file vault key on standby, requiring the"
    echo "password to be entered on wake. insecure mode retains the file "
    echo "vault key on wake."
    echo
    echo "current displays the current settings."
    exit 1
}

status () {
    if [ "$?" = "0" ]; then
        echo "state change to $1 successful"
    else
        echo "state change to $1 unsuccessful"
    fi
}

if [ -z "$1" ]; then
    usage
elif [ "$1" = "sleep" ]; then
    sudo pmset hibernatemode 0
    status $1
elif [ "$1" = "safesleep" ]; then 
    sudo pmset hibernatemode 3
    status $1
elif [ "$1" = "hibernate" ]; then
    sudo pmset hibernatemode 25
    status $1
elif [ "$1" = "current" ]; then
    hibernatemode="$(pmset -g | grep hibernatemode | awk '{ print $2 ; }')"
    if [ "${hibernatemode}" = "0" ]; then
        echo "sleep"
    elif [ "${hibernatemode}" = "3" ]; then
        echo "safesleep"
    elif [ "${hibernatemode}" = "25" ]; then
        echo "hibernate"
    else
        echo "unknown"
    fi
elif [ "$1" = "secure" ]; then
    sudo pmset destroyfvkeyonstandby 1
    status $1
elif [ "$1" = "insecure" ]; then
    sudo pmset destroyfvkeyonstandby 0
    status $1
else
    usage
fi