Regular Expressions 101

^start of line

Group 1(.*)

.*any character (except for line terminators), repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2([^.]+)

Negated Character Class[^.]+

+matches at least one character outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

$end of line

Global pattern flags

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

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.

Search reference

Regular Expression

^(.*)\.([^.]+)$

a.b.test.txt

3.text

file.7z

ninja.walks.file.name