Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:.{0,10}|.{12,}|[a-zA-Z]{6}[a-zA-Z0-9]{5})

1st Alternative.{0,10}

.{0,10}any character (except for line terminators), repeated between 0 and 10 times

2nd Alternative.{12,}

.{12,}any character (except for line terminators), repeated at least 12 times

3rd Alternative[a-zA-Z]{6}[a-zA-Z0-9]{5}

Character Class[a-zA-Z]{6}

{6}matches exactly 6 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-zA-Z0-9]{5}

{5}matches exactly 5 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^(?:.{0,10}|.{12,}|[a-zA-Z]{6}[a-zA-Z0-9]{5})$

New

abc def
abcde12345
aaaaaaaaaaaaaaaaa
aaa4aaa*aa5

abc def
abcde12345
aaaaaaaaaaaaaaaaa
aaa4aaa*aa5