OS X El Capitan: Use the Keyboard Viewer
See where characters for other languages, and special characters and symbols, are located on your keyboard.
Click the Input menu in the menu bar, then choose the input source for the language whose keyboard you want to view.
Choose Show Keyboard Viewer from the Input menu.
If the command isn’t shown, choose Apple menu > System Preferences, click Keyboard, click Keyboard, then select “Show Keyboard, Emoji, & Symbol Viewers in menu bar.”
Press the key on your keyboard that corresponds to the character shown in the Keyboard Viewer, or click keys in the Keyboard Viewer.
Press a modifier key, or a combination of modifier keys, to see special characters or symbols you can type. For example, hold down the Option key or the Option and Shift keys.
If you changed your input source or keyboard layout in step 1, be sure to change it back, if necessary.
If you don’t see a specific character or symbol, try using the Character Viewer.
To insert these characters, press the Option key (bottom of keyboard) then other “code” key to make the symbol appear.
||en-dash. Option, then minus sign
Como Mudar formato de arquivo de screenshot no MAC lion de png para jpg:
defaults write com.apple.screencapture type jpg
no terminal digite:
e depois dê um “restart”
Command-Shift-4 – Will bring up a target icon. Select the area you want to take a screenshot of and it will save that selection to your desktop.
Command-Shift-3 – Will take a screenshot of what is on your current screen.
Command-Shift-4, then space, then click a window – Will take a screenshot of the selected window.
The following commands will do the same thing as above but will save your picture to the clipboard for use wherever you want to paste it to:
Command-Control-Shift-3 – Will take a screenshot what is on the screen and save it to your clipboard
Command-Control-Shift-4, then select an area – Will take a screenshot of the selected area and be saved to the clipboard.
Command-Control-Shift-4, then space, then click a window – Will take a screenshot of the window you select and save it to the clipboard.
Force Eject a CD or DVD that is stuck in your Mac
→ Open Terminal.app and type “drutil tray eject” – this will eject the disk tray most of the time.
If you’re still having no luck, you can restart your Mac and hold down the mouse button. Keep your finger pressed down until the disk ejects, or the login screen appears.