C-5
Cisco Security Appliance Command Line Configuration Guide
OL-10088-01
Appendix C Using the Command-Line Interface
Command Output Paging
Replace regexp with any Cisco IOS regular expression. See The regular expression is not enclosed in quotes
or double-quotes, so be careful with trailing white spaces, which will be taken as part of the regular
expression.
When creating regular expressions, you can use any letter or number that you want to match. In addition,
certain keyboard characters have special meaning when used in regular expressions. Table C-2 lists the
keyboard characters that have special meaning.
To use these special characters as single-character patterns, remove the special meaning by preceding
each character with a backslash (\).
Command Output Paging
On commands such as help or?, show, show xlate, or other commands that provide long listings, you
can determine if the information displays a screen and pauses, or lets the command run to completion.
The pager command lets you choose the number of lines to display before the More prompt appears.
When paging is enabled, the following prompt appears:
<--- More --->
The More prompt uses syntax similar to the UNIX more command:
• To view another screen, press the Space bar.
• To view the next line, press the Enter key.
• To return to the command line, press the q key.
Table C-2 Using Special Characters in Regular Expressions
Character Type Character Special Meaning
period . Matches any single character, including white space.
asterisk * Matches 0 or more sequences of the pattern.
plus sign + Matches 1 or more sequences of the pattern.
question mark ?
1
1. Precede the question mark with Ctrl-V to prevent the question mark from being interpreted as a help command.
Matches 0 or 1 occurrences of the pattern.
caret ^ Matches the beginning of the input string.
dollar sign $ Matches the end of the input string.
underscore _ Matches a comma (,), left brace ({), right brace (}), left parenthesis,
right parenthesis, the beginning of the input string, the end of the
input string, or a space.
brackets [] Designates a range of single-character patterns.
hyphen - Separates the end points of a range.
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