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/

(._)(.)(@.:)(\d).(\d).(\d)

/

gm

1st Capturing Group

(._)

.

matches any character (except for line terminators)* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

_ matches the character _ literally (case sensitive)

2nd Capturing Group

(.)

.

matches any character (except for line terminators)* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

3rd Capturing Group

(@.:)

@ matches the character @ literally (case sensitive)

.

matches any character (except for line terminators)* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)

: matches the character : literally (case sensitive)

4th Capturing Group

(\d)

\d

matches a digit (equivalent to [0-9])+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

.

matches any character (except for line terminators)*? matches the previous token between zero and unlimited times, as few times as possible, expanding as needed (lazy)

5th Capturing Group

(\d)

\d

matches a digit (equivalent to [0-9])+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)

.

matches any character (except for line terminators)*? matches the previous token between zero and unlimited times, as few times as possible, expanding as needed (lazy)

6th Capturing Group

(\d)

\d

matches a digit (equivalent to [0-9])Global pattern flags

g modifier: **g**lobal. All matches (don't return after first match)

m modifier: **m**ulti line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Your regular expression does not match the subject string.Try launching the debugger to find out why.

/

/

gm

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