use strict;
use warnings;
my $file1 = 'C:/Users/Siddharth/Desktop/goodfile.txt'; 
  my $file2 = 'C:/Users/Siddharth/Desktop/badfile.txt'; 
 
open  my $h2, '<', $file2 or die "cannot open file2";


my @a2 = <$h2>;
close $h2;
chomp @a2;
my $match = join '|', @a2;
$match = qr/$match/;

open my $f3,'<',"C:/Users/Siddharth/Desktop/do.txt" or die "$!";
open  my $h1, '<', $file1 or die "cannot open file1";
my @a1 = <$h1>;
close $h1;
my $fh = grep {$_ !~ $match} @a1;
print $f3 $fh;
[download]

2020-06-21 Athanasius added code tags.

---

In reply to Re^6: partial matching of lines in perl by Sidd@786
in thread partial matching of lines in perl by Sidd@786

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.