fizz.sh

for n in {1..100} ; do
    output=''
    expr $n % 3 > /dev/null || output='fizz'
    expr $n % 5 > /dev/null || output=$output'buzz'
    [ -z $output ] && output=$n
    echo $output
done


if [ -z $1 ] ; then
    echo {1..100} | parallel -d' ' -k -m -j100 $0 {}
else
    output=''
    [ $(( $1 % 3 )) -eq 0 ] && output='fizz'
    [ $(( $1 % 5 )) -eq 0 ] && output=$output'buzz'
    [ -z $output ] && output=$1
    echo $output
fi