* Change login background
As with Windows, you can also change the wallpaper of the login of your Mac, but the steps vary if your Mac OS X Tiger or Leopard.
For that is the Tiger, the login screen in Mac OS X 10.4 screen displays as the following image: Library/Desktop Pictures/AquaBlue.jpg. For this reason, any image in that folder will be displayed on the login.
In the event that is Leopard, the image changes to the folder /System/Library/CoreServices/DefaultDesktop.jpg. You must rename the image you want to put the name of DefaultDesktop.jpg.
* Use PHP on your Mac OS X 10.4
Sometimes you need to use PHP, for example when we test our website.Therefore, we must do the following:
1. Start Terminal and type pico /etc/httpd/httpd.conf.
2. Scroll through the text file with the command Ctrl + v and Ctrl + y.
3. Here, in section # Dynamic Shared Object (DSO) Support for the line # LoadModule php4_module libexec/httpd/libphp4.so and removes only the #.
Do the same in the section: # AddModule mod_php4.c.
Finally, save the document by pressing Ctrl + o, and finally out of there by pressing Ctrl + x.
* Hidden Files or Folders
If you have a Mac in accessing other people simply want to have some privacy, and want to hide certain files or folders, try to open a terminal window, type chflags hidden in it, and the Finder UBICATE in that file or folder To hide. Once you have selected, drag it to the terminal before the command you just wrote.
Press Enter and you are all completed.
* Capture your Mac screen
If you want to capture a screen, you can use the command Command + Shift +3 to capture the whole entire screen, or if you want to select only a part, use the command Command + Shift + 4.