Regular Expressions 101

Pro

usernamethe literal text username (case sensitive)

\sany whitespace character

Group 1([a-zA-Z0-9]*)

Character Class[a-zA-Z0-9]*

*matches any number of characters 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)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Atomic Group(?>\sprivilege\s([0-9]{1,2}))?

?repeats the group contents below at most once:

\sany whitespace character

privilegethe literal text privilege (case sensitive)

\sany whitespace character

Group 2([0-9]{1,2})

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.*any character (except for line terminators), 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

username\s([a-zA-Z0-9]*)(?>\sprivilege\s([0-9]{1,2}))?.*

New

username ytnflvby secret  <hash>
username eec privilege 15 secret  <hash>
username protuser privilege 3 password 7   <hash>
username wheel privilege 0 secret  <hash>

Extraction

username ytnflvby secret  <hash>
username eec privilege 15 secret  <hash>
username protuser privilege 3 password 7   <hash>
username wheel privilege 0 secret  <hash>