Regular Expressions 101

Group 1([A-z]{3,6})

Character Class[A-z]{3,6}

{3,6}matches between 3 and 6 characters from the set below:

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(\/.*)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

HTTPthe literal text HTTP (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(\d\.\d)

\da digit

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\da digit

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.

Search reference

Regular Expression

([A-z]{3,6}) (\/.*) HTTP\/(\d\.\d)

New

GET /img/low-poly-ice-caps.jpg HTTP/1.1
Content-Type: text/html; charset=utf-8
Server: hhttpp\n

    <!DOCTYPE HTML>
    <html>
        <body>
            <h1>Hello, World!</h1>
        </body>
    </html>