Maintenance Debugging; Configuring Firewall Name And System Clock; Using Regular Expressions For Information Display - H3C SecPath F1800-A Operation Manual

Operation Manual - System Management
H3C SecPath F1800-A Firewall
Table 1-7 Comparing the configuration file
Compare the current configuration file with
the configuration file saved in the storage
device.

1.3 Maintenance Debugging

1.3.1 Configuring Firewall Name and System Clock

Use the sysname command in system view, and the clock command in user view.
Table 1-8 Basic configuration and management
Name the firewall.
Configure system clock.

1.3.2 Using Regular Expressions for Information Display

I. Introduction to Regular Expression
The regular expression is a tool for mode matching and substitution. With powerful
functions, it can be used flexibly.
In application, the regular expression can be used without limit to some languages or
systems. Therefore, it is now a popular concept and function.
When using the regular expression, you need to construct a matching mode based on
a certain rule, and then match the matching mode with the target object. The simplest
regular expression does not cover any metacharacter. For example, you can define a
regular expression as "hello", and it only matches with the character string "hello".
To help to construct the matching mode flexibly, regular expression provides some
characters of special meanings, which are called metacharacters; it defines the mode
of other characters in the target object.
Table 1-9
Table 1-9 Description of metacharacters
Metacharacter
\
.
Action
Action
lists these metacharacters.
Escape character.
Match any single character except "\n", including space.
Chapter 1 System Maintenance Management
compare configuration
[ line-number1 line-number2 ]
Command
sysname sysname
clock datetime HH:MM:SS YYYY/MM/DD
Description
2-4
Command