Regular Expressions 101

Group product_name(?P<product_name>^.*)

^start of line

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

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2((?P<ver>\*|\d+(\.\d+){0,2}(\.\*)?))

Group ver(?P<ver>\*|\d+(\.\d+){0,2}(\.\*)?)

1st Alternative\*

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

2nd Alternative\d+(\.\d+){0,2}(\.\*)?

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

Group 4(\.\d+){0,2}

{0,2}repeats the group contents below between 0 and 2 times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

Group 5(\.\*)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Character Class[-]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group build(?P<build>.\d*)

.any Unicode character (except for line terminators)

\d*a Unicode decimal digit, repeated any number of times

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group ext(?P<ext>bin|rpm)

1st Alternativebin

binthe literal text bin (case sensitive)

2nd Alternativerpm

rpmthe literal text rpm (case sensitive)

$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

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Search reference

Regular Expression

(?P<product_name>^.*)[-]((?P<ver>\*|\d+(\.\d+){0,2}(\.\*)?))[-](?P<build>.\d*)[.](?P<ext>bin|rpm)$

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