Hi everyone, I'm trying to delete the lines from one file that appears in another file. It would be like this:
filter.pl file1 file2

And file1 contains: 
cat
dogwhisperer
umbrella
mother
sun

[download]
file2: 
dog
sun
moon
umbrella
rain

[download]
And the output should be: 
cat
dogwhisperer
mother

[download]
I'm trying to read the whole first file and then loop reading lines from the other file doing grep, but I'm failing with this... Edit: I think now it kinda works, I was trying with $_ inside grep but it doesn't seem to work. 
open(RANDOM,"<",$frandom) or die("could not open first file!");

my @r_contents = <RANDOM>;

close(RANDOM);

open(FILTER,"<",$ffilter) or die("could not open the second file!");

while(<FILTER>)
{
    chomp;
    my $line = $_;
    @r_contents = grep(!/^$line$/,@r_contents);
}

close(FILTER);

print @r_contents;

[download]

In reply to Filtering lines from one file from another by antonn

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