Regular Expressions 101

^start of line

ATC02007the literal text ATC02007 (case sensitive)

Group 1([0-9]{14})

Character Class[0-9]{14}

{14}matches exactly 14 characters from the set below:

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

Group 2(_UFF_ACC)?

?repeats the group contents below at most once:

_UFF_ACCthe literal text _UFF_ACC (case sensitive)

.any character (except for line terminators)

xlsthe literal text xls (case sensitive)

$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

^ATC02007([0-9]{14})(_UFF_ACC)?.xls$

New

ATC0200720140828080610.xls
ATC0200720140901080346_UFF_ACC.xls

$1