Regular Expressions 101

Pro

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 1(PUB_DATE|DATE_COLLECT_100)

1st AlternativePUB_DATE

PUB_DATEthe literal text PUB_DATE (case sensitive)

2nd AlternativeDATE_COLLECT_100

DATE_COLLECT_100the literal text DATE_COLLECT_100 (case sensitive)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2([[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}T[[:digit:]]{2}:[[:digit:]]{2}:[[:digit:]]{2})

Character Class[[:digit:]]{4}

{4}matches exactly 4 characters from the set below:

[:digit:]a digit [0-9]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[[:digit:]]{2}

{2}matches exactly 2 characters from the set below:

[:digit:]a digit [0-9]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[[:digit:]]{2}

{2}matches exactly 2 characters from the set below:

[:digit:]a digit [0-9]

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Character Class[[:digit:]]{2}

{2}matches exactly 2 characters from the set below:

[:digit:]a digit [0-9]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[[:digit:]]{2}

{2}matches exactly 2 characters from the set below:

[:digit:]a digit [0-9]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[[:digit:]]{2}

{2}matches exactly 2 characters from the set below:

[:digit:]a digit [0-9]

Z<the literal text Z< (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

<(PUB_DATE|DATE_COLLECT_100)>([[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}T[[:digit:]]{2}:[[:digit:]]{2}:[[:digit:]]{2})Z<\/\1>

New

<PUB_DATE>2021-06-25T21:17:51Z</PUB_DATE>
<DATE_COLLECT_100>2021-06-25T21:17:51Z</DATE_COLLECT_100>

Substitution

<$1>$2.001Z</$1>

<PUB_DATE>2021-06-25T21:17:51Z</PUB_DATE>
<DATE_COLLECT_100>2021-06-25T21:17:51Z</DATE_COLLECT_100>