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Re^2: compare most recent file with second most recent file and output difference

by jjoseph8008 (Initiate)
on Nov 05, 2012 at 20:57 UTC ( #1002386=note: print w/ replies, xml ) Need Help??


in reply to Re: compare most recent file with second most recent file and output difference
in thread compare most recent file with second most recent file and output difference

Thanks...I was trying out the solution kenosis provided..I installed file-slurp in the package manager and have my two files in c:\test\ The slurp.pm is in c:\perl64\site\lib\file. I ran the perl script from c:\test\ and got the below error Use of uninitialized value $file_name in -e at C:/Perl64/site/lib/File/Slurp.pm line 116. Use of uninitialized value $file_name in sysopen at C:/Perl64/site/lib/File/Slur p.pm line 193. Use of uninitialized value $file_name in concatenation (.) or string at C:/Perl6 4/site/lib/File/Slurp.pm line 194. read_file '' - sysopen: No such file or directory at c:\test\test_perl.pl line 9. i am more of a batch script person and not into much of perl. please advise.


Comment on Re^2: compare most recent file with second most recent file and output difference
Re^3: compare most recent file with second most recent file and output difference
by Kenosis (Priest) on Nov 07, 2012 at 00:25 UTC

    Hi, jjoseph8008

    I'm not sure what's causing the problem within File::Slurp, so please try the following which doesn't use that Module:

    use strict; use warnings; my ( %file1Hash, %file2Hash, %mergedHash ); my @files = sort { -M $a <=> -M $b } <"*.txt">; do { chomp; $file1Hash{$_}++ } for getFileLines($files[0]); $mergedHash{$_}++ for keys %file1Hash; do { chomp; $file2Hash{$_}++ } for getFileLines($files[1]); $mergedHash{$_}++ for keys %file2Hash; print "$_\n" for grep $mergedHash{$_} == 1, keys %mergedHash; sub getFileLines { open my $fh, '<', $_[0] or die $!; return <$fh>; }

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