Regular Expressions 101

Explanation
Pro

^start of line

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

: the literal text :

Group 1(.*)

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

is the literal text is (case sensitive)

\w*any word character, repeated any number of times

on host the literal text on host (case sensitive)

Group 2(.*)

.*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

^.*: (.*)is \w* on host (.*)$

New

PROBLEM: My application - /mysite.Web/path is CRITICAL on host HOST01
RECOVERY: My application - /mysite.Web/path is OK on host HOST01

PROBLEM: My application - /mysite.Web/path is CRITICAL on host HOST01
RECOVERY: My application - /mysite.Web/path is OK on host HOST01