string(253) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=inux%E6%8B%B7%E8%B4%9D%E6%96%87%E4%BB%B6%E5%88%B0%E5%BD%93%E5%89%8D%E7%9B%AE%E5%BD%95 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
inux拷贝文件到当前目录
