Regular Expressions 101

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negated Character Class[^.]{2,3}

{2,3}matches between 2 and 3 characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:\.[^.]{2,3})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negated Character Class[^.]{2,3}

{2,3}matches between 2 and 3 characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

$end of line

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[^.]*\.[^.]{2,3}(?:\.[^.]{2,3})?$

New

http://www.answers.com/article/1194427/8-habits-of-extraordinarily-likeable-people
http://www.apple.com
http://www.cnn.com.au
http://downloads.news.com.au
http://ftp.android.co.nz
http://global.news.ca
http://www.apple.com