#!usr/bin/local/perl
#use strict;
#use warnings;

my %count;
my $file_name = shift or die "Usage: perl $0 [FILE]\n",

open my $fh,'<', $file_name or die "Could not open '$file_name' $!";

while (my $line = <$fh>) {
        chomp $line;
                foreach my $word (split/\s+/, $line) {
                $count{$word}++;
        }
}

foreach my $word (sort keys %count) {
        printf "%-31s %s\n",$word, $count{$word};
}
..
my @sorted_by_count = sort { $count{$b} <=> $count{$a} } keys %count;

print "These are the 10 most frequented words of $file_name :\n";

print "$_ occured $count{$_} times\n" for @sorted_by_count[0 .. 9];

##</code><code>##

:~/projekt$ perl wfreq.pl janne.txt
These are the 10 most frequented words of janne.txt :
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
 occured  times
:~/projekt$