Regular Expressions 101

Pro

\ba Unicode word boundary

OU=the literal text OU= (case sensitive)

Group 1([^,\\]*(?:\\.[^,\\]*)*)

Negated Character Class[^,\\]*

*matches any number of characters outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:\\.[^,\\]*)*

*repeats the group contents below any number of times:

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any Unicode character (except for line terminators)

Negated Character Class[^,\\]*

*matches any number of characters outside the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

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

\bOU=([^,\\]*(?:\\.[^,\\]*)*)

New

CN=Entrust Certification Authority - L1K,OU=(c) 2012 Entrust\, Inc. - for authorized use 
only,OU=See www.entrust.net/legal-terms,O=Entrust\, Inc.,C=US