Regular Expressions 101

1st Alternative(netstat\s*\/(a|n|o|b){1,4})

Group 1(netstat\s*\/(a|n|o|b){1,4})

netstatthe literal text netstat (case sensitive)

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

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(a|n|o|b){1,4}

{1,4}repeats the group contents below between 1 and 4 times:

1st Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

2nd Alternativen

nthe literal n (110₁₀ / 156₈ / 6E₁₆) (case sensitive)

3rd Alternativeo

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

4th Alternativeb

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

2nd Alternative(netstat\s+-(a|n|o|b){1,4})

Group 3(netstat\s+-(a|n|o|b){1,4})

netstatthe literal text netstat (case sensitive)

\s+any whitespace character, repeated at least once

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4(a|n|o|b){1,4}

{1,4}repeats the group contents below between 1 and 4 times:

1st Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

2nd Alternativen

nthe literal n (110₁₀ / 156₈ / 6E₁₆) (case sensitive)

3rd Alternativeo

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

4th Alternativeb

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

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

(netstat\s*\/(a|n|o|b){1,4})|(netstat\s+-(a|n|o|b){1,4})

New

netstat -anob
netstat -ano
netstat    -anob
netstat    -ano
netstat /anob
netstat /ano
netstat   /anob
netstat   /ano
netstat/anob
netstat/ano
  netstat  /anob
  netstat  /ano
netstat -a
netstat -an
netstat /a
netstat /an
netstat /ona
netstat /bona
netstat /nob
netstat /noba
netstat /onab
netstat /noba
netstat /abon
netstat /abn
netstat /anb



netstat-anob
netstat-ano

Regular Expression

Extraction