| Sponsored link: |
 Windows grep software to search (and replace) through files and folders on your PC and network |
| Sponsored link: |
|
Windows grep software to search (and replace) through files and folders on your PC and network |
| Regular Expressions | ||||
|---|---|---|---|---|
| Function | Regular Expression | Back reference | Description | Remarks |
| Simple date | \b(\d?\d[-\/]\d?\d[-\/](\d\d)?\d\d)\b |
\1 | Match date within a text | Will match 99/99/9999 (or 99-99-9999) |
| Simple time | \b(\d?\d:\d\d(:\d\d(\.\d+)?)?)\b |
\1 | Match time within a text | Will match 99:99:99.999 |
| Simple HTML tag | (<[^>]+>) |
\1 | Match any tag within HTML code | Will fail on <IMG src="fastforward.gif" ALT=">>"> |
| HTML tag with text | (<[^>]+>([^<]+<\/[^>]+>)?) |
\1 | Match either single tag only or "tag set" including "embedded text" | Will also fail on <IMG src="fastforward.gif" ALT=">>"> and on nested HTML tags, as in <B><I>text</I></B> |
| Simple IP address | \b((\d{1,3}\.){3}\d{1,3})\b |
\1 | Match an IP address within a text | Will match 999.999.999.999 |
| IP address | \b(([0-2]?\d{1,2}\.){3}[0-2]?\d{1,2})\b |
\1 | Match an IP address within a text | Will still match 299.299.299.299 |
| True IP address | \b((([01]?[0-9]{1,2}|2([0-4][0-9]|5[0-5]))\.){3}([01]?[0-9]{1,2}|2([0-4][0-9]|5[0-5])))\b |
\1 | Match an IP address within a text | Will only match valid IP addresses |
