Apple Mac OS X Server manual $ hdiutil help $ dig -h $ diff --help

When you use more or less, an information bar appears at the bottom of the screen. When you see the bar, you can press the Space bar to go to the next page, the B key to go back a page, or the Return key to scroll the file forward one line at a time. When you get to the end of a file, more will return you to the prompt and less will wait for you to press the Q key to quit.

Several third-party Mac OS X applications are available for viewing formatted man pages in scrollable windows. You can find one by choosing Mac OS X Software from the Apple menu, and then seraching for “man page.”

Note: Not all commands and tools have man pages. For a list of available man pages, look in /usr/share/man.

To access command help, enter the command followed by the -help, -h, --help, or help parameter:

$ hdiutil help

$ dig -h

$ diff --help

To view a pop-up list of options and parameters you can use with the command, enter the command without any options or parameters:

$ sudo serveradmin

Note: Not all techniques work for all commands, and some commands don’t have onscreen help.

Chapter 1 Executing Commands

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