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 use File::stat;
 $st = stat($file) or die "No $file: $!";
 if ( ($st->mode & 0111) && $st->nlink > 1) ) {
     print "$file is executable with lotsa links\n";
 }

my @listfiles=`ls -l ./`;
foreach(@listfiles) {
        chomp;
...
        my @details = split(/\t/, $_);
        print "$details[-1]: $details[0]\n";
}