Dell PowerConnect B-FCXs Configuration Manual page 51

TABLE 5
Character
.
*
+
?
^
$
_
[ ]
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Using stack-unit, slot number, and port number with CLI commands
Special characters for regular expressions
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
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.
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