| Character | Meaning |
|---|---|
. |
Wildcard, matches any character. |
^ |
Start of a string. |
$ |
End of a string. |
\t |
Tab character. |
\s |
Any whitespace, i.e. space, tab, linefeed, or carriage return. |
\w |
Any alphanumeric character or underscore. |
\t |
Tab character. |
| Regex | Meaning |
|---|---|
? |
Zero or one of the preceeding character or set. |
+ |
One or more of the preceeding character or set. |
* |
Zero or more of the preceeding character or set. |
{4} |
Four of the preceeding character or set. |
{2,6} |
between two and six (inclusive) of the preceeding character or set. |
{,5} |
One or more of the preceeding character or set. |