Regular Expressions 101

Pro

(?sm)applies the following effective flags to the remainder of the pattern: gsm

s modifier: single line. Allows a dot to match line terminators

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

^start of line

Group 1([^=\n]*)

Negated Character Class[^=\n]*

*matches any number of characters outside the set below:

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\na line-feed (newline) character (ASCII 10)

\sany whitespace character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\sany whitespace character

Group 2(.*?)

.*?any character, repeated any number of times

Positive Lookahead(?=\n[^=\n]*\s=\s|\z)

1st Alternative\n[^=\n]*\s=\s

\na line-feed (newline) character (ASCII 10)

Negated Character Class[^=\n]*

*matches any number of characters outside the set below:

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\na line-feed (newline) character (ASCII 10)

\sany whitespace character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\sany whitespace character

2nd Alternative\z

\zend of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?sm)^([^=\n]*)\s=\s(.*?)(?=\n[^=\n]*\s=\s|\z)

New

groupid = foo
location = westus
randomkey = fbae3700c34cb06c
resourcename = example4-resourcegroup
tls_private_key = -----BEGIN RSA PRIVATE KEY-----
//stuff
-----END RSA PRIVATE KEY-----

foo = 123
faa = 223

Extraction

groupid = foo
location = westus
randomkey = fbae3700c34cb06c
resourcename = example4-resourcegroup
tls_private_key = -----BEGIN RSA PRIVATE KEY-----
//stuff
-----END RSA PRIVATE KEY-----

foo = 123
faa = 223