下载出错，就重新执行下载。在bilibili下载时，经常会出错下载中断，需要重新运行命令才行。该脚本可以自动重试下载，直到下载完成后结束。

you-get-retry.sh

#!/bin/bash

url='https://www.bilibili.com/video/av17981530'

# 一行写法
while true; do you-get $url  && { echo ok完成; break; } || { echo err出错,重试; sleep 5; }; done

while true; do you-get $url  --playlist && { echo ok完成; break; } || { echo err出错,重试; sleep 5; }; done


# 简明写法
while true
do
you-get $url
    if [ $? -eq 0 ]; then
        echo "--------------- job complete ---------------"
        break;
    else
        echo "...............error occur, retry in 2 seconds .........."
        sleep 2
    fi
done

# 多任务下载
#!/bin/bash
BaseUrl="https://www.bilibili.com/video/av22856532/?p="
for i in {1..22}
do
echo "${BaseUrl}$i"
( you-get "${BaseUrl}$i"  || you-get "${BaseUrl}$i" || echo "${BaseUrl}$i" >> err.txt ) &
sleep 3
if [ $((i%10)) -eq 0 ];then
wait
fi
done