Regular Expressions 101

Pro

^start of line

Group 1([\d.]+)

Character Class[\d.]+

+matches at least one character from the set below:

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\s+any whitespace character, repeated at least once

PERthe literal text PER (case sensitive)

\s+any whitespace character, repeated at least once

Group 2(.*?)

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

Non-Capturing Group(?:\sIn\s*(.+?))?

?repeats the group contents below at most once:

\sany whitespace character

Inthe literal text In (case sensitive)

\s*any whitespace character, repeated any number of times

Group 3(.+?)

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

Non-Capturing Group(?:\s*DEAD.*)?

?repeats the group contents below at most once:

\s*any whitespace character, repeated any number of times

DEADthe literal text DEAD (case sensitive)

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

$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.

25 tokens

Regular Expression

^([\d.]+)\s+PER\s+(.*?)(?:\sIn\s*(.+?))?(?:\s*DEAD.*)?$

New

1.0 PER Sample DEAD VOLUME 1
1.0 PER Request DEAD VOLUME 1
10.0 PER Empty Well In Column DEAD VOLUME 10
8.0 PER Empty Well In Row DEAD VOLUME 8
1.0 PER Sample
1.0 PER Request
10.0 PER Empty Well In Column