Question

For example, I want to remove unwanted line with bbbb

aaaa
bbbb
cccc
dddd

I use the following perl regular expression to accomplish this.

$_ =~ s/bbbb//g;

The problem here is that a blank line is stays, for example

aaaa

cccc
dddd

I need to remove the unwanted text line and also the blank line.

Answer 1

You could simply include the newline in your regular expression:

$_ =~ s/bbbb\n//g;

This will result in:

aaaa
cccc
dddd