Displaying; Regular Expressions - Huawei AR2200 Series Configuration Manual

Huawei AR2200 Series Enterprise Routers
Configuration Guide - Basic Configuration
Key
Tab

2.3.2 Displaying

All command lines have the same displaying feature. You can construct the displaying mode as
required.
You can control the display of information on the CLI as follows:
l
Table 2-4 Keys for displaying
Key
Ctrl_C
Space
Enter

2.3.3 Regular Expressions

The regular expression is an expression that describes a set of strings. It consists of common
characters (such as letters from "a" to "z") and particular characters (also named metacharacters).
The regular expression is a template according to which you can search for the required string.
Users can use regular expressions to filter output information to rapidly locate desired
information.
A regular expression can provide the following functions:
l
l
Issue 02 (2011-10-15)
If output information cannot be displayed on a full screen, you have three options to view
the information, as shown in
Searching for and obtaining a sub-string that matches a rule in the string.
Substituting a string according to a certain matching rule.
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Function
Press Tab after typing the incomplete key word and the system
runs the partial help:
l If the matching key word is unique, the system replaces the
typed one with the complete key word and displays it in a new
line with the cursor a space behind.
l If there are several matches or no match at all, the system
displays the prefix first. Then you can press Tab to view the
matching key word one by one. In this case, the cursor closely
follows the end of the word and you can type a space to enter
the next word.
l If a wrong key word is entered, press Tab and the word is
displayed in a new line.
Table 2-4.
Function
Stops the display and running of the command.
Allows information to be displayed on the next screen.
Allows information to be displayed on the next line.
2 CLI Overview
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