Rubular: a Ruby regular expression editor and tester
Regex quick reference
[abc]
A single character of: a, b or c [^abc]
Any single character except: a, b, or c [a-z]
Any single character in the range a-z [a-zA-Z]
Any single character in the range a-z or A-Z ^
Start of line $
End of line \A
Start of string \z
End of string
.
Any single character \s
Any whitespace character \S
Any non-whitespace character \d
Any digit \D
Any non-digit \w
Any word character (letter, number, underscore) \W
Any non-word character \b
Any word boundary character
(...)
Capture everything enclosed (a|b)
a or b a?
Zero or one of a a*
Zero or more of a a+
One or more of a a{3}
Exactly 3 of a a{3,}
3 or more of a a{3,6}
Between 3 and 6 of a options:
i
case insensitivem
make dot match newlinesx
ignore whitespace in regexo
perform #{...} substitutions only onceFor a complete Ruby regex guide, see the Pickaxe.