A Menu Extra in the Mac OS X, is a small icon that appears on the right side of the Menu Bar. For example, check out the image of the Eject icon to the right of this text that's circled in red.
Mac OS X Menu Extras often...
provide a quick and easy way to access common features (chat, sync)
display information (time, email)
control system functions (volume, eject a DVD/CD)
There are lots of third party Menu Extras available. One of my favorites is the Google Notifier which displays email and calendar info in the Menu Bar. According to the image on the right, I haven't checked my Google Calendar in 18 days (oops!) and I have 25 new emails.
People make Menu Extras for everything from monitoring your processor's temperature to the top stories on Digg.com. Britta Gustafson, a Delicious community manager intern, put together a giant list of third party OS X Menu Extras you might want to check out. Before you get lost exploring all the third party Menu Extras available on the Internet, the Mac OS comes built-in with several very helpful Menu Extras such as Bluetooth, Remote Desktop, Airport, Battery, Classic, iSync and Eject.
Here's a tutorial and video demonstration that shows you how to add/delete and rearrange OS X Menu Extras.
Requirements:
Any computer running the Macintosh OS X 10.1 operating system or higher
A tiny drop of common sense
NERD
NOTE: I've pointed out the Eject Menu Extra in the title of this article and in many of the images because, believe it or not, the Eject Menu Extra is the most popular. A quick Google search returned over 12,000 results of people looking to add and Eject icon to their OS X Menu Bar.
From the OS X Finder, double-click on your hard drive icon. It's probably called "Macintosh HD" unless you renamed it. In the video below, my hard drive is called "Helo" (a Battlestar Galactica reference) not "Macintosh HD".
Navigate to the Menu Extras folder inside CoreServices:
Macintosh HD > System > Library > CoreServices > Menu Extras
Inside the Menu Extras folder you should see a file called "Eject.menu". Click here to zoom in on the photo.
Double-click on the file named "Eject.menu" and an eject button will magically appear above in your menu bar.
When the Eject icon appears, it may not be in the exact spot you want. To move it around, Command-drag the icon anywhere on the menu bar that you like.
The Command key is the key on your keyboard with the Apple icon. I usually get about 10 emails a month from who don't know this.
Feel free to add as many Menu Extra icons as you want to your menu bar. Some Menu Extras require specific hardware and/or software to operate. For example, if you don't have an Airport card installed inside your Mac, when you double-click on the "Airport.menu" icon nothing will happen.
If you accidentally click on a Menu Extra that you don't want enabled, then Command-drag the icon off the menu bar. It will make a little smoke poof, just like when you drag an icon out of the Dock, and disappear.
Here's a list of the standard Menu Extras that are included with OS X:
AirPort.menu
Battery.menu
Bluetooth.menu
Classic.menu
Clock.menu
Displays.menu
Eject.menu
Fax.menu
HomeSync.menu
iChat.menu
Ink.menu
IrDA.menu
PCCard.menu
PPP.menu
PPPoE.menu
RemoteDesktop.menu
Script Menu.menu
Sync.menu
TextInput.menu
User.menu
Verizon.menu
Volume.menu
VPN.menu
NERD
NOTE: Menu Extras, sometimes called "menulets", were introduced with Mac OS X v10.1 to replace Dock extras (docklings), and may thus be viewed as another attempt to bring the control strip from OS 9 to OS X.
Copy
Videos Off YouTube YouTube
prevents viewers from downloading files off their site. But there are
ways around this. Here's a step-by-step tutorial on how to rip video
files off YouTube.com and convert them for your Video iPod.
Mac
Mini RAM Upgrade Tutorial Want
to upgrade the RAM in your
Mac Mini? You can definitely save a few bucks by buying a stripped
down Mac Mini and upgrading the RAM yourself. But before you
can install that extra RAM, you'll need to take a walk down to
your local hardware store and grab a couple putty knives.
iPod
Alarm Clock Whether
you prefer to be woken by the scream of a rock star or the
French horn in a classical symphony, the iPod's Alarm Clock
can help you open your eyes every morning with style!
Rip
DVD's to iPod Video Need
something to watch on your iPod Video? Here's a tutorial that explains
how to use a program called Handbrake to rip DVD's into iPod compatible
MPEG-4 video files.
Install
Free PSP Games Think
PSP games are overpriced? Us too. Here's a tutorial on how to download
free games off the Internet and install them on your PSP.
Copy
Videos onto a PSP Can't
get enough of your favorite TV show or movie? Here's a short tutorial
that expalins how to add videos to your Sony PSP.
Format
a PSP Memory Stick When
you first purchase a Memory Stick for your PSP, you need to format
it before you can use it. Here's how.
iPod
World Clock
iPod owners might have noticed the World
Clock. Seemingly trivial but helpful at the same time.
Remove
iPod Scratches Got
a scratched up iPod Nano? Me too. After a few failed attempts to
get Apple to help me out, I decided to fix the scratches myself.
Here's how to remove the scratched from your iPod Nano for only
$4.
Search
Engine Submit
If you have a web site, then you know how important it is to get
listed in the search engines. Here's a collection of direct links
to the submission pages of all the best free search engines
on the net.
Chat
Room Nerd Lingo
Do you speak Chat Room Nerd? No? Well you better wake
it up. If you don't learn soon, the next time you get an instant
message, you might not understand it. Worse yet, it might be
from your Grandmother.
Add
GPS Info to Your Blog You
probably know what your zip code or area code is (at least I hope
so) but what about the GPS of your house? Here's how to find out
and add it to the metadata on your web site
Expose
the Exposé Blob Like
using Exposé but hate hot corners and function keys? Why
not unleash the hidden Exposé Blob built into Mac
OS X? You can even make your blob look like Eric Cartman.
Play
Commodore 64 Games Again Want
to play those old Commodore 64 games from the early 1980's? All
you need is the game ROM and an emulator. Here's a tutorial to
get you started.
Reset
iTunes Play Count Has
a crappy song crept its way into your ‘Most Listened To' playlist?
This tutorial explains how to reset the Play Count of one or more songs
in your iTunes library.