Regular Expressions 101

(?ms)applies the following effective flags to the remainder of the pattern: gms

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

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

Group 1(\s*((?<privatekey>-----BEGIN .* PRIVATE KEY-----.*?-----END .* PRIVATE KEY-----)|(?<certificate>-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----))\s*){2}

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

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

Group 2((?<privatekey>-----BEGIN .* PRIVATE KEY-----.*?-----END .* PRIVATE KEY-----)|(?<certificate>-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----))

1st Alternative(?<privatekey>-----BEGIN .* PRIVATE KEY-----.*?-----END .* PRIVATE KEY-----)

Group privatekey(?<privatekey>-----BEGIN .* PRIVATE KEY-----.*?-----END .* PRIVATE KEY-----)

-----BEGIN the literal text -----BEGIN (case sensitive)

.*any character, repeated any number of times

PRIVATE KEY-----the literal text PRIVATE KEY----- (case sensitive)

.*?any character, repeated any number of times

-----END the literal text -----END (case sensitive)

.*any character, repeated any number of times

PRIVATE KEY-----the literal text PRIVATE KEY----- (case sensitive)

2nd Alternative(?<certificate>-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----)

Group certificate(?<certificate>-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----)

-----BEGIN CERTIFICATE-----the literal text -----BEGIN CERTIFICATE----- (case sensitive)

.*?any character, repeated any number of times

-----END CERTIFICATE-----the literal text -----END CERTIFICATE----- (case sensitive)

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

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

(?ms)(\s*((?<privatekey>-----BEGIN .* PRIVATE KEY-----.*?-----END .* PRIVATE KEY-----)|(?<certificate>-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----))\s*){2}

New