How to “Get Info” from the command line

Try running system_profiler SPAirPortDataType from the command line - that will probably give you all the info you need. It's not terribly speedy though (just checked it with Lion, looks like the format has changed but it's still all there).

You can, but you will need some extra utilities:

brightness - you can download the program at http://dev.sabi.net/svn/dev/trunk/LocationDo/brightness.c and compile it using the command:

gcc -std=c99 -o brightness brightness.c -framework IOKit -framework ApplicationServices

Or you can just download it from my server at http://attic.luo.ma/brightness.bz2

Once you have it, brightness 0.01 will lower the brightness as much as possible

Bluetooth - The command you want is blueutil which you can find here https://github.com/toy/blueutil. I have a compiled version of that available at http://attic.luo.ma/blueutil2.bz2. I also have another, older version of a program by the same name which you can download from http://attic.luo.ma/blueutil.bz2.

Whichever program you use, the -h flag will explain how to use it.

Wi-Fi - You can turn AirPort power on or off using:

networksetup -setairportpower <device name> <on off>

where <device name> is probably either en0 or en1

You can find out which it is using

networksetup -listnetworkserviceorder | egrep "Wi-Fi, Device"

For my MacBook Air (which uses en0), the command to turn it off is:

networksetup -setairportpower en0 off

More Settings

Be sure that you have changed the Energy Settings in System Preferences too, but you can also set them using:

sudo pmset -b sleep 10

to tell the computer to sleep after 10 minutes when on battery, and/or:

sudo pmset -b displaysleep 5

to tell the computer display to sleep after 5 minutes, when on battery (the -b flag indicates battery).

pmset -g

will show you your current settings.