Using special characters, In regular expressions, Using special characters in regular expressions – Brocade BigIron RX Series Configuration Guide User Manual

Page 90

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12

BigIron RX Series Configuration Guide

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Searching and filtering output

1

To display lines that do not contain a specified search string (similar to the exclude option for show
commands) press the minus sign key ( - ) at the --More-- prompt and then enter the search string.

The filtered results are displayed.

As with the commands for filtering output from show commands, the search string is a regular
expression consisting of a single character or string of characters. You can use special characters
to construct complex regular expressions. Refer to

“Using special characters in regular

expressions”

on page 12 for information on special characters used with regular expressions.

Using special characters in regular expressions

You use a regular expression to specify a single character or multiple characters as a search string.
In addition, you can include special characters that influence the way the software matches the
output against the search string. These special characters are listed in the following table.

TABLE 31

Special characters for regular expressions

Character

Operation

.

The period matches on any single character, including a blank space.
For example, the following regular expression matches “aaz”, “abz”, “acz”, and so on, but not just
“az”:
a.z

*

The asterisk matches on zero or more sequential instances of a pattern.
For example, the following regular expression matches output that contains the string “abc”,
followed by zero or more Xs:
abcX*

+

The plus sign matches on one or more sequential instances of a pattern.
For example, the following regular expression matches output that contains "de", followed by a
sequence of “g”s, such as “deg”, “degg”, “deggg”, and so on:
deg+

?

The question mark matches on zero occurrences or one occurrence of a pattern.
For example, the following regular expression matches output that contains "dg" or "deg":
de?g
NOTE: Normally when you type a question mark, the CLI lists the commands or options at that CLI

level that begin with the character or string you entered. However, if you enter Ctrl-V and
then type a question mark, the question mark is inserted into the command line, allowing
you to use it as part of a regular expression.

--More--, next page: Space, next line: Return key, quit: Control-c

-telnet

filtering...

sync-standby Sync active flash (pri/sec/mon/startup config/lp images)

to standby if different

terminal Change terminal settings

traceroute TraceRoute to IP node

undelete Recover deleted file

whois WHOIS lookup

write

Write running configuration to flash or terminal

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