Regular Expressions 101

Pro

^start of line

Negative Lookahead(?![Ll]ine\b)

Character Class[Ll]

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

lthe literal l (108₁₀ / 154₈ / 6C₁₆) (case sensitive)

inethe literal text ine (case sensitive)

\ban ASCII word boundary

.*any character (except for line terminators), repeated any number of times

\ban ASCII word boundary

Group 1(TIMEKEEPER|CLIENT|LAW FIRM)

1st AlternativeTIMEKEEPER

TIMEKEEPERthe literal text TIMEKEEPER (case sensitive)

2nd AlternativeCLIENT

CLIENTthe literal text CLIENT (case sensitive)

3rd AlternativeLAW FIRM

LAW FIRMthe literal text LAW FIRM (case sensitive)

\ban ASCII word boundary

.*any character (except for line terminators), repeated any number of times

$end of line

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

^(?![Ll]ine\b).*\b(TIMEKEEPER|CLIENT|LAW FIRM)\b.*$

New

Line 1 : Missing required fields
line 2 : No Delimiter
PL is not approved TIMEKEEPER
CLIENT  ABC is not authorized
LAW FIRM address is required
address is required
ABC is not authorized

Substitution

Line 1 : Missing required fields
line 2 : No Delimiter
PL is not approved TIMEKEEPER
CLIENT  ABC is not authorized
LAW FIRM address is required
address is required
ABC is not authorized