|
Character |
What it represents |
Example |
|
|
Any |
Represents the character typed,
with the exception of special
characters defined below |
A represents A, B represents B etc |
|
|
. |
Any character(except line breaks) |
Will match c, 3, [SPACE] etc |
|
|
\d |
Any digit |
Will match 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9 |
|
|
\D |
Any non-digit |
Will match anything except 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9 |
|
|
^ |
Beginning of line |
|
|
|
$ |
End of line |
|
|
|
\t |
[TAB] |
\thello matches "hello" preceded by a tab |
|
|
\r |
Line Break [RETURN] |
|
|
|
\s |
Whitespace |
Matches any whitespace character: [SPACE], [TAB], Line Break, New Line |
|
|
\S |
Non whitespace |
Matches any non whitespace character |
|
|
\w |
Word characters |
Typically letters, numbers and underscores |
|
|
\W |
Non word characters |
Matches any non word character |
|
|
\character |
A character that is normally a special character |
Special characters are: . # ^ $ \ ? + * | [ ] ( ) |
|
|
[any series of characters] |
Any characters inside the brackets |
[abc] matches a, b or c |
|
|
[any character - another character] |
Any characters within the range of characters |
[a-c] matches a, b or c |
|
|
[^ any series of characters] |
Any character except ones after the ^ |
[^c3] matches any character except c or 3 |
|
|
? |
0 or 1 of the previous character |
ba?t matches bat or bt, but not boat |
|
|
* |
0 or more of the previous character |
ba*t matches bt, bat, baat etc |
|
|
+ |
1 or more of the previous character |
ba+t matches bat, baat etc but not bt |
|
|
pattern1/pattern2 |
Either of the patterns specified |
ba|t matches ba or t but not bat (it will match ba and then t for two matches instead of one) |
|
|
(pattern)one of the special characters |
Same as above, but treats the characters in the parenthesis as a group |
(ba)*t match t, bat, babat but not bt |
