Regular Expressions 101

Pro

^start of line

Group ip(?<ip>[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 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

Group mac(?<mac>..:..:..:..:..:..)

.any character (except for line terminators)

.any character (except for line terminators)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.any character (except for line terminators)

.any character (except for line terminators)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.any character (except for line terminators)

.any character (except for line terminators)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.any character (except for line terminators)

.any character (except for line terminators)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.any character (except for line terminators)

.any character (except for line terminators)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.any character (except for line terminators)

.any character (except for line terminators)

\s*any whitespace character, repeated any number of times

.any character (except for line terminators)

\s*any whitespace character, repeated any number of times

Group interface(?<interface>.*)

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

$end of line

Global pattern flags

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

^(?<ip>[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}).*(?<mac>..:..:..:..:..:..)\s*.\s*(?<interface>.*)$

New

192.168.87.2     0x1         0x2         0f:50:56:e3:9e:6a     *        wlan0

Substitution

192.168.87.2     0x1         0x2         0f:50:56:e3:9e:6a     *        wlan0