in reply to ignore duplicates and show unique values between 2 text files

The reason of your problem is the newline character. It is considered a part of the line you read in, but it is not present on the last line in each file. Therefore, '121' plus newline is not the same as '121' without a newline.

Use chomp to get rid of newlines: 

while (my $line = <FILE>) {
    chomp $line;
    # ...

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Re^2: ignore duplicates and show unique values between 2 text files
by perlnoobster (Sexton) on Apr 29, 2013 at 15:09 UTC
    Hi Choroba, I have updated the script however my output still does not show the desired results, it show: 
    'def'
'xyx'
'def'

'abc'

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[d/l]
      You should use chomp for the second file handle, too.
      لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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