templates/bash/nixpkgs/soe

23 lines
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#!/usr/bin/env bash
echo -n "Primes up to: "
read num
echo
nums=()
for i in `seq 2 $num`; do
nums+=($i)
done
unset nums[-1]
while [ -n "$nums" ]; do
prime=${nums[0]}
echo $prime
nums_=()
for elem in "${nums[@]}"; do
[ $(( $elem % $prime )) -eq 0 ] || nums_+=($elem)
done
nums=(${nums_[@]})
done