Regular Expressions 101

Pro

^start of line

Group 1([a-zA-Z]:)

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:.*\\)?

?repeats the group contents below at most once:

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

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Group 2(\d{2}-\d{2}-\d{4}[a-zA-Z]?)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Character Class[a-zA-Z]?

?matches at most one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

^([a-zA-Z]:)\\(?:.*\\)?(\d{2}-\d{2}-\d{4}[a-zA-Z]?)

New

Q:\Region01s\FY 02\02-01-1716A.pdf

Q:\Region01s\FY 02\02-01-1716A.pdf