Regular Expressions 101

Pro

^start of line

the literal text

Group 1([\w -_ ]+)

Character Class[\w -_ ]+

+matches at least one character from the set below:

\wany word character

-_one character from (32₁₀) to _ (95₁₀)

the literal (32₁₀ / 40₈ / 20₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\na line-feed (newline) character (ASCII 10)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Type: Ethernetthe literal text Type: Ethernet (case sensitive)

\na line-feed (newline) character (ASCII 10)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

Hardwarethe literal text Hardware (case sensitive)

.+any character (except for line terminators), repeated at least once

\na line-feed (newline) character (ASCII 10)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

BSD Device Name: the literal text BSD Device Name: (case sensitive)

Group 2(.+)

.+any character (except for line terminators), repeated at least once

\na line-feed (newline) character (ASCII 10)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

IPv4 Addresses: the literal text IPv4 Addresses: (case sensitive)

Group 3(192[\.\d]+)

192the literal text 192

Character Class[\.\d]+

+matches at least one character from the set below:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\da digit

$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

No unit tests · Add a test to get started

25 tokens

^    ([\w -_ ]+):\n\n +Type: Ethernet\n +Hardware.+\n +BSD Device Name: (.+)\n +IPv4 Addresses: (192[\.\d]+)$

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