#!/bin/sh

id=айдипользователя
start=100000000
end=999999999

proxy=127.0.0.1:8888

for (( n=$start; n<$end; n++ )); do
        if (curl --socks5-hostname $proxy -s https://vk.com/doc"$id"_"$n" | grep "<title>Error | VK</title>");
                then
                        echo "https://vk.com/doc"$id"_"$n" contains error, skipping"
                else
                        echo "https://vk.com/doc"$id"_"$n" doesn't contain error, saving to doc"$id"_"$n".html"
                        curl --socks5-hostname $proxy -s https://vk.com/doc"$id"_"$n" -o doc"$id"_"$n".html
        fi
done