regex101: PCRE (Legacy) Match Workspace

Positive Lookbehind(?<=[^a-zA-Z\d.]|^)

1st Alternative[^a-zA-Z\d.]

Negated Character Class[^a-zA-Z\d.]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative^

^start of string

Group 1((?:\d{1,2}\s*[A-Z][a-z]{2}\s*\d+)|(?:(?:\d{1,2}\/){2}\d+)|(?:\d+(?:-\d{2}){2})|\d{2}\.\d{2})

1st Alternative(?:\d{1,2}\s*[A-Z][a-z]{2}\s*\d+)

Non-Capturing Group(?:\d{1,2}\s*[A-Z][a-z]{2}\s*\d+)

\d{1,2}a digit, repeated between 1 and 2 times

\s*any whitespace character, repeated any number of times

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]{2}

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

2nd Alternative(?:(?:\d{1,2}\/){2}\d+)

Non-Capturing Group(?:(?:\d{1,2}\/){2}\d+)

Non-Capturing Group(?:\d{1,2}\/){2}

{2}repeats the group contents below exactly 2 times:

\d{1,2}a digit, repeated between 1 and 2 times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

3rd Alternative(?:\d+(?:-\d{2}){2})

Non-Capturing Group(?:\d+(?:-\d{2}){2})

\d+a digit, repeated at least once

Non-Capturing Group(?:-\d{2}){2}

{2}repeats the group contents below exactly 2 times:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a digit, repeated exactly 2 times

4th Alternative\d{2}\.\d{2}

\d{2}a digit, repeated exactly 2 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{2}a digit, repeated exactly 2 times

Positive Lookahead(?=[^a-zA-Z\d.])

Negated Character Class[^a-zA-Z\d.]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

25 tokens

Regular Expression

(?<=[^a-zA-Z\d.]|^)((?:\d{1,2}\s*[A-Z][a-z]{2}\s*\d+)|(?:(?:\d{1,2}\/){2}\d+)|(?:\d+(?:-\d{2}){2})|\d{2}\.\d{2})(?=[^a-zA-Z\d.])

New

24 Aug 2016: nno-emvirt010a/b; 16 Aug 2016 nnt-emvirt010a/b nnd-emvirt010a/b COSI-1.6.5
24.16 nno-emvirt010a/b nnt-emvirt010a/b nnd-emvirt010a/b EI.01.02.03\
9/23/16: COSI-1.6.5 Logs updated at /vobs/COTS/1.6.5/files/Status_2016-07-27.log, Status_2016-07-28.log, Status_2016-08-05.log, Status_2016-08-08.log

Extraction

24 Aug 2016: nno-emvirt010a/b; 16 Aug 2016 nnt-emvirt010a/b nnd-emvirt010a/b COSI-1.6.5
24.16 nno-emvirt010a/b nnt-emvirt010a/b nnd-emvirt010a/b EI.01.02.03\
9/23/16: COSI-1.6.5 Logs updated at /vobs/COTS/1.6.5/files/Status_2016-07-27.log, Status_2016-07-28.log, Status_2016-08-05.log, Status_2016-08-08.log