string(271) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=inux%E5%A4%8D%E5%88%B6%E6%96%87%E4%BB%B6%E5%88%B0%E5%8F%A6%E4%B8%80%E5%8F%B0%E6%9C%BA%E5%99%A8%E9%87%8C => Failed to connect to 101.89.159.206 port 38087: Connection refused"
inux复制文件到另一台机器里
