从bash数组中选择每N个条目

array=("item1" "item2" "item3" "item4" "item5" "item6" "item7" "item8" "item9" "item10")

N=3  # 每N个条目
selected_items=()  # 存储选择的条目

for ((i=0; i<${#array[@]}; i+=N)); do
    for ((j=0; j<N && i+j<${#array[@]}; j++)); do
        selected_items+=("${array[i+j]}")
    done
done

echo "选择的条目："
for item in "${selected_items[@]}"; do
    echo "$item"
done