guide to regex
| Expressions | Description |
|---|---|
| . | Any Character Except New Line |
| \d | Digit (0-9) |
| \D | Not a Digit (0-9) |
| \w | Word Character (a-z, A-Z, 0-9, _) |
| \W | Not a Word Character |
| \s | Whitespace (space, tab, newline) |
| \S | Not Whitespace (space, tab, newline) |
| --- | --- |
| \b | Word Boundary |
| \B | Not a Word Boundary |
| ^ | Beginning of a String |
| $ | End of a String |
| --- | --- |
| [] | Matches Characters in brackets |
| [^ ] | Matches Characters NOT in brackets |
| | | Either Or |
| ( ) | Group |
| Quantifiers | Description |
|---|---|
| * | 0 or More |
| + | 1 or More |
| ? | 0 or One |
| {3} | Exact Number |
| {3,4} | Range of Numbers (Minimum, Maximum) |
321-555-4321
123.555.1234
\d\d\d.\d\d\d.\d\d\d\d this will match any charcter between number or \d{3}.\d{3}.\d{4}
\d\d\d[-.]\d\d\d[-.]\d\d\d\d this is will match only - or . between numbers
[89]00[-.]\d\d\d[-.]\d\d\d\d this will find 800 or 900 in beginning of numbers
[1-7]00[-.]\d\d\d[-.]\d\d\d\d this will find 100 to 700 in beginning of numbers
[^a-z] this will match everything except small case letters
[a-z] this will match small case letters
[a-zA-Z] this will match small and captial case letters
Mr. Vishal
Mr Sachin
Ms Jobby
Mrs. Twinkle
Mr. L
M(r|s|rs)\.?\s[A-Z]\w*
[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+
https?://(www\.)?\w+\.\w+
https?://(www\.)?(\w+\.)(\w+)
Now you want to replace matching strings with group 3
-
search with
https?://(www\.)?(\w+\.)(\w+) -
replace section type
$3
output :
com
io
- The length of the PAN number is always 10
- Each char is an uppercase letter,
- ABCDS1234Y ()
[A-Z]{5}[0-9]{4}[A-Z]