Regular Expressions 101

Non-Capturing Group(?:^\d+ ?[gm]b | \d+ ?[gm]b(?= |$))

1st Alternative^\d+ ?[gm]b

^start of line

\d+a Unicode decimal digit, repeated at least once

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[gm]

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case sensitive)

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

b the literal text b (case sensitive)

2nd Alternative \d+ ?[gm]b(?= |$)

the literal (32₁₀ / 40₈ / 20₁₆)

\d+a Unicode decimal digit, repeated at least once

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[gm]

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case sensitive)

mthe literal m (109₁₀ / 155₈ / 6D₁₆) (case sensitive)

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

Positive Lookahead(?= |$)

1st Alternative

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative$

$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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?:^\d+ ?[gm]b | \d+ ?[gm]b(?= |$))

New

coolblue 100gb
connector 500 mb for thing
5gb for user
load 800 mb
1000 add-on
20 gb

coolblue 100gb
connector 500 mb for thing
5gb for user
load 800 mb
1000 add-on
20 gb