Brocade NetIron CER 2000 Series Hardware Guide (Supporting R05.6.00) - Manual (Page 66)

56 Brocade NetIron CES 2000 Series and NetIron CER 2000 Series Hardware Installation Guide
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CLI Functionality
4
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. See the next section 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 12 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.
^ A caret (when not used within brackets) matches on the beginning of an input string.
For example, the following regular expression matches output that begins with “deg”:
^deg
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-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