H3C XE 200 IP, Руководство по эксплуатации

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Operation Manual – Basic Configuration
H3C XE 200/2000 IP PBX
Chapter 2 Command Line Interface for Configuration
2-14
I. Pausing information display
When the information displayed exceeds one screen page, the display is paused. In
this case, three options shown in Table 2-5 are available.
Table 2-5 Display functions
Key Function
<Ctrl+C> when information is being
displayed Stop the display and the command
execution.
<Space> when information display pauses Continue to display the next screen.
<Enter> when information display pauses Continue to display the next line.
2.2.7 Regular Expressions
I. Introduction to regular expressions
Regular expressions are a powerful and flexible tool for pattern matching and
substitution. They are not restricted to a language or system and have been widely
accepted.
When using a regular expression, you need to construct a matching pattern according
to a certain rule, and then compare the matching pattern with the target object. The
simplest regular expressions exclude all metacharacters. For example, you can specify
a regular expression “hello”, which only matches the character string “hello”.
For flexible matching mode construction, regular expressions are allowed to contain
some special characters, called metacharacters, to define how other characters appear
in the target object. The following table describes the metacharacters.
Table 2-6 Metacharacters
Metacharacter Description
\ Escape character
. Matches any single character except for “\n”, including spaces.
!
The character to the left of the exclamation mark in the
expression should have no match or one match in the target
object.
*
The character to the left of the asterisk in the expression should
have no match or sequence of matches one after another in the
target object.
+
The character to the left of the plus sign in the expression should
have one match or sequence of matches one after another in the
target object.