Regular Expressions 101

Group 1(.*)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2(\d+)

\d+a digit, repeated at least once

$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.

Search reference

Regular Expression

(.*)\.(\d+)$

New

2999.1049.00_GRB.1
2999.1049.00_GRB.165
toto.tata.00_GRB.1

$1_$2