There are a lot of things out there that can be done to your Mac OS X. These 101 are just a small collection of those cool things. Since every single trick are too small to be compiled as single article, I decided to combine them all in a single post. Hope you can enjoy it.

Slowly Increase/Decrease Volume

Pressing modifier keys while increasing/decreasing (F4/F5 for MacBook) will slowly increase/decrease the volume bar by a quarter.

Searching by Lyrics

Spotlight in Leopard now supports searching music by its lyric.

Attach Files into Mail

Simple drag-and-drop to the Mail.app icon helps you done the attaching in New Message.

Working without Mouse or Trackpad

Using only keyboard shortcuts with modifier key and keys F1 to F3, you can do Turn on Full Keyboard Access, Jump to Menubar and Go to Dock respectively.

Assign a Shortcut to Multiple Actions

Mac allows you to assign a shortcut to multiple actions, e.g. you can assign Space to invoke Quicksilver and LaunchBar (even though Quicksilver will be prioritized). This will be useful when you want to do toggling, such as turning on and off Private Browsing in Safari which have been assigned as different actions.

Movie Slow Motion

While in Quicktime, you can use your trackpad finger-scrolling or mouse scrolling to move forward/backward frame by frame or even stopping the movie.

Quick Hide/Unhide Dock

Using keystrokes will help you quickly do the Dock hiding/unhiding.

Quote Level in Mail

Keystrokes ' and ' can be used to raise/lower Mail quote level easily.

Open Minimized Windows

When you have one of your Applications minimized, you can maximize it by doing:

1. until you reach the minimized Application
2. Press
3. Release

Using Pathbar

Besides showing your current position, pathbar can also be used to help you drag-and-drop some files to one of the folders shown in pathbar hierarchy.

Cropping Image in Preview

Draw the region you want to crop followed by pressing keystrokes K will do the job.

"Hello" from Mac

Open your Terminal and use command line:

say Hello

Your Mac will say "Hello" to you. Hello can be replaced with other words, eg. say Chunky Bacon.

Reveal Same Contact Group

Selecting one or more contacts in your Address Book and pressing help you reveal all contacts which are in the same group.

Quick Finding Folder when Saving

When you saw dialog box asking where the file should be saved, you can use keystrokes G to open another Go to dialog box to help you easier jumping to targetted folder (even hidden folder can be accessed).

Scrolling with Mouse

If you have mouse that can only scroll vertically, you can press and scrolling to get your horizontal scrolling ability. However in Photoshop, this cannot work. Instead, you need to press .

Add Startup Items

Select one of your applications sitting on the dock to be added to startup items, right click on it and choose Open at Login. That particular application will be opened starting from next startup.

New Tab in Safari

Double-clicking on empty area in Safari tab bar will return you new tab bar just like in Firefox.

Zooming In/Out Display

Press and scroll up/down with your mouse will get your display zoomed in/out.

Ripping Apart Terminal Tabs

As in Safari, you can split Terminal tabs by dragging it vertically out of tab bar.

Hide All Others Windows

Keystrokes H will help you hide all others windows except the window you're currently working at.

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Transparent Hidden Apps on Dock

defaults write com.apple.Dock showhidden -bool YES
killall Dock

When executed, command lines above will make your hidden Applications showed transparently on the Dock.

Drag Items to Finder Toolbar

Yes, you can do it by drag-hold-release item on the toolbar of Finder. To drag them out again, use modifier key before dragging the item.

Delete Songs from iTunes Library

You need to use to delete selected songs completely from your iTunes library.

Force Open in Tab

defaults write com.apple.Safari TargetedClicksCreateTabs -bool true

With above command line, you can force Safari to open all sites (even the sites that don't want to be tabbed) in new tab.

Quick Empty Trash

If you don't want to see any confirmation dialog box when you need to empty your trash, you can use keystrokes .

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Import Icon to Preview

1. Choose and highlight an icon
2. Hit C to copy that icon into clipboard
3. Open Preview
4. Press N
5. You should be able to see your icon

Remove Zoom Anti-Aliasing

When you zoomed in your display, pressing \ will reduce the blur by turning off anti-aliasing.

Move Bookmark Item into Bookmarks Folder

You need to drag that bookmark item out of bookmark bar first before you can drag it into bookmark folder. Press to enable the dragging.

Eliza's Psychiatrist Office

1. Open Terminal
2. Type emacs
3. Press
4. Write xdoctor
5. Be nice and answer all of her questions
6. It's for free

Quick Subscribe RSS to Mail

If you click on RSS button next to your Safari address bar, at the bottom right corner you will see Actions: Subscribe in Mail. That particular feed will be added to your Mail RSS.

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Copy Font Style in TextEdit

Unlike normal copy-paste with C and V, if you want to copy-paste the style of the font, you need to use C and V.

Shortcuts List

In most of Applications, if you use Leopard's help / and search term shortcuts, you will be able to see all available shortcuts of that Application.

Organizing PDFs with Preview

1. Open the file with Preview
2. Show Sidebar (D)
3. Drag-and-drop page or delete with

Use Small Buttons in Firefox 3

1. Open Firefox
2. Go to View ▸ Toolbars ▸ Customize..
3. Check Use Small Icons

Schedule Shutdown

To schedule shutdown, you can go to Energy Saver Preference Pane and press Schedule.. button.

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Make Alias

Use keystrokes L to quickly make alias of selected items.

Open Two or More Similar Application at the Same Time

open -n /Applications/Safari.app

You will have two Safaris running at the same time. You can also do that for other applications by replacing the path with Application's path. Unfortunately, Firefox doesn't allow it.

Zero Brightness

For MacBooks, the display brightness can be easily set to zero with keystrokes .

Shortcuts for Adium Status

Open you Adium and go under Status menu. You will see shortcuts have been assigned to some display status.

Create Print Button in Safari

Insert javascript:window.print(); and drag that particular url into your bookmark bar. Whenever you want to print particular html file, click on that button and you will be brought to printing pane.

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Open Spotlight Searching Result in Finder

Instead of pressing , pressing on Spotlight search result will bring you to Finder where that item is enclosed in.

Drag Items to Safari

Directly from Finder, you can drag-and-drop file to Safari without using Choose File Dialog Box.

Auto-Change Background Images

Inside Desktop & Screen Saver Preferences Pane under DesktopChange Picture checkbox to let your Desktop background changed every x minutes (you choose).

Quote Message with Mail

If you want to quote particular part of message, highlight that part and click on reply. That part will be automatically quoted in your reply message.

Split Adium Contact List

While holding , you can drag out your Adium Contact List header.

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Screensaver as Desktop Background

/System/Library/Frameworks/ScreenSaver.framework/Resources/ScreenSaverEngine.app/Contents/MacOS/ScreenSaverEngine -background &

Command line above will make your screensaver as Desktop background. Take note the process ID. If you want to stop the screensaver, you can use:

kill PID 478

Where 478 is the ID number you took note before.

Enable Safari Inspector

defaults write com.apple.Safari WebKitDeveloperExtras -bool true

Use above command line to enable Safari Web Inspector, it's like Firebug in Firefox.

Change Main Language

You can change your Mac main language with these steps:

1. Go to System Preferences
2. Inside International Pane
3. Click on Language
4. Choose your language

Access Anywhere in Safari with Tabs

If you want to be able to tab through all checkboxes and radio buttons, pressing F7 will do you the favor. This keystrokes toggles between textboxes-lists control and all controls inside Keyboard Shortcuts Preferences Pane.

Processing Microsoft Word Files

.doc or .docx files can be opened and edited with TextEdit. After you've finished editing the file, save it again as Word Format and the file can be opened again with Microsoft Word.

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Wrap around Finder

When you've reach the end of the files list of your Finder, pressing another Arrow Down won't do anything for you. If you want to wrap around and start over again from the top of the list, pressing will do that for you.

Hide Hard Disk from Desktop

If you want your Desktop to be very clean, you can also hide the Hard Disk. To hide Hard Disk:

1. Open Finder
2. Go to Preferences.. (,)
3. Choose General section
4. Untick All Items

Move Finder Highlight Alphabetically

Pressing when you're inside Finder will help you jump through files alphabetically.

Hiding Finder Sidebar Items

Go to Finder Preferences under Sidebar and untick all unnecessary items by unticking the checkboxes.

Hiding Other Applications via Dock

Holding while opening an Application will turn all other applications hidden, left alone that Application opened.

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Add Sidebar Items

You can highlight items and press T to put those items on the Sidebar. To remove them, simple right-clicking and choosing remove would do.

Auto-Adjust Finder Sidebar Width

Keystrokes T can help you auto-adjust your Finder sidebar width.

Change New Finder Behavior

Go to your Finder Preferences under General section. There you will see New Finder windows open, change the folder to Applications. Next time you open new Finder window, the folder displayed will be your Applications folder.

Differentiating Single and Multiple Pages PDF Icons

Multiple pages PDF icons will have black binder at the left side of the page, while single page PDF files don't have.

Help Bar

In help bar, pressing will do new searching instead of which shows the result.

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Assign New Alias Link

Open your alias file Get Info Pane and click on Select New Original button to assign new link to your alias file.

Jump Category of Spotlight Result

If you press followed by Up/Down Arrow, you can jump between categories of all your Spotlight search result.

Search Spotlight by Date Modified

If you want to search for files modified before 2nd January 2008, you can use search term modified:<=1/2/08. The date can be changed accordingly.

Spotlight Finder Search

Keystrokes F help you to quickly jump to do searching by name.

Slow Motion Mode

By pressing while executing some commands, will give you slow motion mode of the execution. As far as I know, those commands are:

• Spaces
• Exposé
• Dashboard
• Closing Widgets
• Minimize
• Opening Stack and Fan

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Force Dock Magnification

Even though Dock magnification is turned off, you can force the magnification by pressing . The good side here is, the magnification is still set to be turned off.

Restarting Dock Settings

If you accidentally (or deliberately) put up hundreds of items into your Dock, it will waste your time to drop them out one by one. The fastest way to restore your original Dock is to delete your com.apple.dock.plist and relogin to your account.

Attach Item to Mail with Dock

If you press while dragging item on Dock to your new mail pane, that particular will be attached to the mail.

27 Menulets

All of these default menubar items are located inside Mac HD ▸ System ▸ Library ▸ CoreServices ▸ Menu Extras.

Combine Exposé and Space

While in Space mode, you still can Exposé selected Space.

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Moving All Windows to Other Space

When pressing , dragging a window will affect every single window of the same Application.

Collecting All Opened Windows in One Space

While Space mode is turned on, pressing C will help you collect all opened windows in a single Space.

Read-Only Folder

If you see a crossed-out pencil icon at the bottom-left corner of your Finder, it means that particular folder is set to be Read-Only.

Combining Selections

In most of Applications, especially Cocoa Applications, you can use to combine several separated blocks of selection. This also can be done while selecting blocks of text.

Announce Time

You could set your Mac to announce the time for you every period of time. It can be done inside Date & Time Preferences Pane.. with checkbox labelled Announce the time.

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Get Current Date and Time

date

Above command can be used inside Terminal to get current date and time set inside your Mac.

date -jnu

Above command returns current date and time also, but it's according to UTC time.

Quick Jump to Settings Pane

Pressing along with one of brightness keys will bring you to Display Preferences Pane while pressing it along with one of volume adjustment keys will take you to Sound Preferences Pane.

Black Frame

Maybe you haven't noticed it, there is 1-2 milimeters black frame around your display. There is nothing to do about it, it's normal.

Mute Volume Adjustment

Holding while increasing/decreasing volume will shut the tapping sound.

Quick Accessing Applications Folder

When you select your Finder, pressing A will do the trick.

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Auto Replace Equation

If you highlight an equation, e.g. 5*15+20.5, and then press 8, your Mac will automatically replace it the correct answer, i.e. 95.5 in that particular example. Note: Script Editor will be launched.

Rotate Through Calculator Mode

Clicking Calculator's Zoom button won't enlarge the view pane. Instead, it will rotate your Calculator's mode: Basic, Scientific and Programmer.

Quick Word Definition

Hovering a word and pressing keystrokes D will have a definition window popped up. Holding after, and hovering over another word will display the definition of that word.

Adjust Outline Thickness for Extract Shape

When you're using Extract Shape feature in Preview, after drawing several enclosing areas, pressing +/- will increase/decrease the thickness of the pink outline.

Curly Quote in TextEdit

Go to Edit ▸ Substitutions and tick Smart Quotes. You will get your curly quotes in your TextEdit document.

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TextEdit Searching

Maybe you haven’t noticed this, pressing while opening Dialog Box: Find will change the button to In Selection. So the results will only be limited to the selection.

Taking Snapshot with Grab

Unlike usual screen capture, the pointer can be shown when you capture your screen with Grab. Pointer type can be chosen inside Grab Preferences.

Your Mac Serial Number

Go to Apple ▸ About This Mac and click on the version number (the one below big Mac OS X title) twice. You will see your Mac serial number.

Built-In Image Effects

If you happen to go inside Developer ▸ Applications ▸ Graphic Tools, you will see an Application called Core Image Fun House which inside got a lot of ready-to-use image effects.

If Administrator Forgets Password

In this case, Mac OS X DVD Installer will be needed. Restart your Mac while pressing C on boot up. After that, choose Installer ▸ Reset Password. Follow all the steps and hopefully you can get new password.

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Huge Icons

defaults write com.apple.finder DesktopViewOptions -dict IconSize -integer 256
killall Finder

Command lines above will make your Desktop icons very big (256x256). You can use command lines below to reset it to medium size (64x64).

defaults write com.apple.finder DesktopViewOptions -dict IconSize -integer 64
killall Finder

Rename Trash

There is a good news: you can edit the display name of your Trash folder. Follow these steps:

1. Go inside folder: System ▸ Library ▸ CoreServices
2. Right-click on Dock and Choose Show Package Contents
3. Open Contents ▸ Resources ▸ English.lproj ▸ InfoPlist.strings
4. Change the value of variable named TrashName

Here is the bad news, it’s a Read-Only file.

Change Dock’s Menu List

In the same folder as before, you will see another file named DockMenus.strings. All the naming of Dock menus are inside this file. If you want to change your Dock’s menu naming, changing the right value of the variables will do the trick.

Translucent Menu Bar

Go to your Desktop & Screen Saver Preferences Pane under Desktop section, tick checkbox labelled Translucent Menu Bar to get your menu bar translucent.

Mail Recipients

Mail can help you do the auto-completion when you want to send message out. In case you don’t want the auto-completion to be done for certain address, you can go under Mail: Window ▸ Previous Recipients and remove contacts from the list.

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Quick Forward in Mail

Hold while double-clicking the message will do you the trick.

Blind Carbon Copy

In your default Mail settings, you won’t see this address field, but it’s exist. Turn it on by using keystrokes B or by enabling View ▸ Bcc Address Field.

Prioritize Mail

Click on the button left to your Subject Field and enable Priority Field. Now, you can send your Mail with three priority: Low, Normal and High Priority.

Random Signatures

You can have more than one signature for your Mail. And the fun thing is, you can set your Mail to select one of your signatures collection randomly. You can do so:

1. Go to Mail: Mail ▸ Preferences... ▸ Signatures
2. Find Option Box labelled Choose Signature
3. Choose At Random

Make your Mac Delivers Speech

When you’re too lazy to read document by yourself, select some portions of the text, choose Edit ▸ Speech ▸ Start Speaking and your Mac will read the text for you.

And the last one..

Quick Shut Down

The last trick, quick shut down which is used almost every day: .

How many of them you've known? How many of them you haven't noticed before?

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