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Command Manual – System Management
Quidway S8500 Series Routing Switches
Table 4-6 Special characters in the regular expression
Special
characters
_
(
Description
Use the display logbuffer command to view the attribute of logbuffer and the
information recorded in logbuffer.
Example
# Show the system logbuffer attribute and the log information in logbuffer.
<Quidway> display logbuffer
Logging buffer configuration and contents:enabled
Allowed max buffer size : 1024
Actual buffer size : 512
Channel number : 4 , Channel name : logbuffer
Dropped messages : 0
Overwritten messages : 0
Current messages : 91
4.6.4 display logbuffer summary
Syntax
display logbuffer summary [ level severity ]
View
Any view
Description
Underscore, similar to a
wildcard and can stand for
these characters:
(^|$|[,(){} ])
A space, the beginning of
the input string, the end of
the input string
Left parenthesis, push flag
in program
Huawei Technologies Proprietary
4-37
Chapter 4 System Maintenance Commands
Restriction
If the first character in the regular
expression is not a underscore, then
there is no restriction on the number
of the underscore (but it is restricted
by the command length)
If the first character in the regular
expression is an underscore, then
there should be less than five
consecutive underscores.
If the underscores in a command are
discrete,
on
the
underscores are filtered for the output
information, but not the subsequent
underscores.
It is recommended not to use this
character in the regular expression.
first
group
of
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