Regular Expressions 101

Pro

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

Exception sending emailthe literal text Exception sending email (case sensitive)

Character Class[\S\s]+?

+?matches at least one character from the set below:

\Sany non-whitespace character

\sany whitespace character

Positive Lookahead(?=\d{4}(-\d\d){2})

\d{4}a digit, repeated exactly 4 times

Group 1(-\d\d){2}

{2}repeats the group contents below exactly 2 times:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\da digit

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

.+Exception sending email[\S\s]+?(?=\d{4}(-\d\d){2})

New

2019-03-13 00:33:44,846 [INFO] -:  foo
2019-03-13 00:33:45,096 [INFO] -:  Exception sending email
To:
[foo@bar.com, bar@bar.com]
CC:
[baz@bar.com]
Subject:
some subject
Body:
some

body
2019-03-13 00:33:45,190 [INFO] -:  bar