Regular Expressions 101

Pro

\ban ASCII word boundary

Character Class[a-zA-Z]+

+matches at least one character 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)

Positive Lookahead(?=\s+(?:ssh|folder|http))

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:ssh|folder|http)

1st Alternativessh

sshthe literal text ssh (case sensitive)

2nd Alternativefolder

folderthe literal text folder (case sensitive)

3rd Alternativehttp

httpthe literal text http (case sensitive)

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

\b[a-zA-Z]+(?=\s+(?:ssh|folder|http))

New

Thu May 23 22:41:55 2019 19 10.10.10.20 22131676 /mnt/tmp/test.txt b s o r John ssh 0 *
Thu May 23 22:42:55 2019 19 10.10.10.20 22131676 /mnt/tmp/test.txt b s o i Jake folder 0 *
Thu May 23 22:41:55 2019 19 10.10.10.20 22131676 /mnt/tmp/test.txt b s o t Steve http 0 *