Regular Expressions 101

^start of line

Group username(?'username'.*)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group UID(?'UID'.*)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group GID(?'GID'.*)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group GECOS(?'GECOS'.*)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group home(?'home'.*)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group shell(?'shell'.*)

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

$end of line

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

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25 tokens

Regular Expression

^(?'username'.*):.*:(?'UID'.*):(?'GID'.*):(?'GECOS'.*):(?'home'.*):(?'shell'.*)$

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