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je44ery's scratchpad

by jffry (Hermit)
on Jul 15, 2008 at 21:17 UTC ( [id://697804] : scratchpad . print w/replies, xml ) Need Help??

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  1. or download this
    $ cat A; echo '* * * * *'; cat B
    apple
    ...
    lime
    orange
    banana
    
  2. or download this
    $ perl -e 'open F,$ARGV[0] or die;shift;my %set = map {$_ => 1 } <>; f
    +or (<F>) {print if $set{$_}};' A B
    lime
    
  3. or download this
    $ perl -e 'open F,$ARGV[0] or die;shift;my %set = map {$_ => 1 } <>; f
    +or (<F>) {print unless $set{$_}};' A B
    apple
    cherry
    carrot
    
  4. or download this
    $ cat C
    grape
    ...
    $ perl -e 'open F,$ARGV[0] or die;shift;my %set = map {$_ => 1 } <>; f
    +or (<F>) {print if $set{$_}};' A B C
    cherry
    lime