Regular Expressions 101

Pro

^start of line

Group ip(?P<ip>\d+\.\d+\.\d+\.\d+)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Character Class[\n\r]

\na line-feed (newline) character (ASCII 10)

\ra carriage return (ASCII 13)

USER_NAME=the literal text USER_NAME= (case sensitive)

Group user(?P<user>.+)

.+any character (except for line terminators), repeated at least once

Character Class[\r\n]

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

PASSWORD=the literal text PASSWORD= (case sensitive)

Group password(?P<password>.+)

.+any character (except for line terminators), repeated at least once

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Detailed match information will be displayed here automatically.

25 tokens

^
(?P<ip>\d+\.\d+\.\d+\.\d+)[\n\r]
USER_NAME=(?P<user>.+)[\r\n]
PASSWORD=(?P<password>.+)

New

192.168.1.1
USER_NAME=admin
PASSWORD=admin123

192.168.1.2
USER_NAME=user
PASSWORD=user123