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Diffstat (limited to 'TWiki/RegularExpression.mdwn')
| -rw-r--r-- | TWiki/RegularExpression.mdwn | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/TWiki/RegularExpression.mdwn b/TWiki/RegularExpression.mdwn index db340de9..f450744c 100644 --- a/TWiki/RegularExpression.mdwn +++ b/TWiki/RegularExpression.mdwn @@ -1,4 +1,6 @@ -Regular expressions allow more specific queries then a simple query. +Regular expressions (REs), unlike simple queries, allow you to search for text which matches a particular pattern. + +REs are similar to (but more poweful than) the "wildcards" used in the command-line interfaces found in operating systems such as Unix and MS-DOS. REs are used by sophisticated search engines, as well as by many Unix-based languages and tools ( e.g., `awk`, `grep`, `lex`, `perl`, and `sed` ). **Examples** |