On May 10, Bob Showalter said:
>perl -e 'do {$x{<>}=1} until eof; exists $x{$_} && print && delete $x{$_}
>while(<>)' mac1.txt mac2.txt
perl -e 'do{$x{<>}=1}until eof;delete$x{$_}&&print while<>' X Y
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Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
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