Regular Expressions 101

Group 1((?:[a-zA-Z0-9]{2}[:-]){5}[a-zA-Z0-9]{2})

Non-Capturing Group(?:[a-zA-Z0-9]{2}[:-]){5}

{5}repeats the group contents below exactly 5 times:

Character Class[a-zA-Z0-9]{2}

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

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

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[:-]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-zA-Z0-9]{2}

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

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

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

((?:[a-zA-Z0-9]{2}[:-]){5}[a-zA-Z0-9]{2})

New

Jul 11 18:09:06 ? user.info shepherd[366]: fifo: 8C:C1:21:A2:44:A3 is being marked undiscovered from state IS_IM_UNDELIV_DEST_UNDISC_MARKER_CLEAR by port removal

Regular Expression

Extraction