string(287) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=inux%E5%A6%82%E4%BD%95%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 14.18.117.71 port 38093: Connection refused"
inux如何复制文件到另一台机器里
