Getting Familiar with Management Applications
December 2005
© Foundry Networks, Inc.
2 - 7
?
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
$
A dollar sign matches on the end of an input string.
For example, the following regular expression matches output that ends with “deg”:
deg$
_
An underscore matches on one or more of the following:
•
,
(comma)
•
{
(left curly brace)
•
}
(right curly brace)
•
(
(left parenthesis)
•
)
(right parenthesis)
•
The beginning of the input string
•
The end of the input string
•
A blank space
For example, the following regular expression matches on “100” but not on “1002”, “2100”,
and so on.
_100_
[ ]
Square brackets enclose a range of single-character patterns.
For example, the following regular expression matches output that contains “1”, “2”, “3”, “4”,
or “5”:
[1-5]
You can use the following expression symbols within the brackets. These symbols are
allowed only inside the brackets.
•
^ –
The caret matches on any characters
except
the ones in the brackets. For
example, the following regular expression matches output that does
not
contain “1”,
“2”, “3”, “4”, or “5”:
[^1-5]
•
-
The hyphen separates the beginning and ending of a range of characters. A match
occurs if any of the characters within the range is present. See the example above.
Table 2.3: Special Characters for Regular Expressions (Continued)
Character
Operation
Содержание FastIron Edge Switch X424
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