Regular Expressions 101

Group 1(.+?_)

.+?any Unicode character (except for line terminators), repeated at least once

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[A-Z]

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

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

Regular Expression

(.+?_)[A-Z]

New

apple_C_Q2rtQFD15H_1.txt
apple_CQVku8Qjdzx_1.txt
apple_CQ2rtQFD15H_3.txt
bananna___Bo3-mKXnozt___.txt
bananna___CPf6gN5L3SP___.txt
bananna___CTu8APZMomD___.txt
bananna_rotten___Byj7BPXNnpE___.txt