my %hash;
for (<DATA>) {
    s/^(\S+).*/$1/;
    $hash{$_}++
}
use Data::Dumper;
print Dumper \%hash;
__DATA__
817    5:00
817    5:00
817    5:15
123    4:45
817    5:30
495    7:45

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In reply to Re: count of a word occurrence by jZed
in thread count of a word occurrence by Anonymous Monk

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