Regular Expressions 101

Group 1(\S+?:){4}

{4}repeats the group contents below exactly 4 times:

\S+?any non-whitespace character, repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 2(\d+)

\d+a digit, repeated at least once

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

(\S+?:){4}(\d+)

New

arn:aws:ec2:eu-abcd-1:123456789:instance/i-000000000000

arn:aws:ec2:eu-abcd-1:123456789:instance/i-000000000000