Mac OS X: 实用脚本程序(bash scripts)系列-2

如下：

#!/bin/sh

# Sleep or shutdown script

# tryin' to be 'green'.....

# look for exception file

if [ -f "/var/db/.dontSleep" ]; then

exit 0

fi

# if we're a laptop, exit.

# No shutting down laptops (or waking them up unbidden!)

IS_LAPTOP=`/usr/sbin/system_profiler SPHardwareDataType | grep "Model" | grep "Book"`

if [ "$IS_LAPTOP" != "" ]; then

exit 0

fi

# check the time; exit if it's between 5 am and 7 pm

current_hour=`/bin/date +%H`

if [ $current_hour -gt 5 -a $current_hour -lt 19 ]; then

exit 0

fi

# now check idle time;

# exit if we've been idle less than 20 minutes

idleTime=`ioreg -c IOHIDSystem | perl -ane 'if (/Idle/) {$idle=int((pop @F)/1000000000); print $idle,"/n"; last}'`

if [ $idleTime -lt 1200 ]; then

exit 0

fi

# tell Power Manager to wake us up or turn us on at 6am M-F

pmset repeat wakeorpoweron MTWRF 06:00:00

# check to see if a user's logged into the console

login_status=`/usr/bin/who | /usr/bin/awk '{ print $2 }'`

for i in $login_status; do

if [ $i = "console" ]; then

# someone's logged in, sleep

osascript -e 'tell application "System Events" to sleep'

exit 0

fi

done

# if we got this far, it's OK to shut down.

/sbin/shutdown -h now

exit 0