Regular Expressions 101

Explanation

Pro

Positive Lookbehind(?<=GROSS\D*)

GROSSthe literal text GROSS (case sensitive)

\D*any character that's not a digit, repeated any number of times

Group 1(\d.*?)

\da digit

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

Positive Lookahead(?=\s*kg)

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

kgthe literal text kg (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.

26 tokens

(?<=GROSS\D*)(\d.*?)(?=\s*kg)

New

ID.NO.  123456
DATE    02/05/21
TIME    01:52 AM
GROSS-   13.5 kg
TARE      0.0 kg
NET  -   13.5 kg

ID.NO.  123456
DATE    02/05/21
TIME    01:52 AM
GROSS-   13.5 kg
TARE      0.0 kg
NET  -   13.5 kg