Regular Expressions 101

^start of line

Group 1(.+)?

?repeats the group contents below at most once:

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

Group 2((?!#\!bin\/bash)#[^#=\)\]\}]+?)

Negative Lookahead(?!#\!bin\/bash)

#the literal # (35₁₀ / 43₈ / 23₁₆)

\!the literal ! (33₁₀ / 41₈ / 21₁₆)

binthe literal text bin (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

bashthe literal text bash (case sensitive)

#the literal # (35₁₀ / 43₈ / 23₁₆)

Negated Character Class[^#=\)\]\}]+?

+?matches at least one character outside the set below:

#the literal # (35₁₀ / 43₈ / 23₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

$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.

Search reference

Regular Expression

^(.+)?((?!#\!bin\/bash)#[^#=\)\]\}]+?)$

New

#!bin/bash

# kom
" # nie kom"#kom
${zmienna#.?} #kom
polecenie #komentarz
polecenie#komentarz
#