Search using Regex¶
Special Regex Characters¶
These characters have special meaning in regex:
. + * ? ^ $ ( ) [ ] { } | \ To escape these characters, use preceding
the character. For example, \* matches a star and does not perform the
function mentioned below.
Basics of Regular Expressions¶
| Character | What does it do | Example | Matches |
|---|---|---|---|
^ |
Matches beginning of line | \^abc | abc, abcdef.., abc123 |
$ |
Matches end of line | abc\$ | my:abc, 123abc, theabc |
. |
Match any character | a.c | abc, asg, a2c |
| |
OR operator | abc|xyz | abc or xyz |
(...) |
Capture anything matched | (a)b(c) | Captures 'a' and 'c' |
[...] |
Matches anything contained in brackets | [abc] | a, b, or c |
[^...] |
Matches anything not contained in brackets | [\^abc] | xyz, 123, 1de |
[a-z] |
Matches any characters between \'a\' and \'z\' | [b-z] | bc, mind, xyz |
[0-9] |
Matches any digit between 0 and 9 | [5-9] | 56, 9, 789 |
{x} |
The exact \'x\' amount of times to match | (abc){2} | abcabc |
{x,} |
Match \'x\' amount of times or more | (abc){2,} | abcabc, abcabcabc |
{x,y} |
Match between \'x\' and \'y\' times | (a){2,4} | aa, aaa, aaaa |
* |
Matches the character before the ? zero or one time | ab*c | abc, abbcc, abcdc |
+ |
Matches character before + one or more times | a+c | ac, aac, aaac |
? |
Matches the character before the ? zero or one time | ab?c | ac, abc |