Dell PowerConnect B-RX BigIron RX Series Configuration Guide v02.7.02 - Page 85

Searching and filtering output 1 TABLE 27 Character ? ^ $ _ [ ] | ( ) Special characters for regular expressions (Continued) Operation 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. 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. A vertical bar separates two alternative values or sets of values. The output can match one or the other value. For example, the following regular expression matches output that contains either "abc" or "defg": abc|defg Parentheses allow you to create complex expressions. For example, the following complex expression matches on "abc", "abcabc", or "defg", but not on "abcdefgdefg": ((abc)+)|((defg)?) If you want to filter for a special character instead of using the special character as described in the table above, enter "\" (backslash) in front of the character. For example, to filter on output containing an asterisk, enter the asterisk portion of the regular expression as "\*". BigIron RX# show ip route bgp | include \* BigIron RX Series Configuration Guide 13 53-1001810-01