I'm using ubuntu14 LTS. Problems: 1. When run roscore, got a mistake and an advice to ping the localhost. 2. Nearly every time I run a directive with sudo, I got a warning that unable to resolve host. It turns out, the reason is I changed the ubuntu…
[root@one ~]# wget www.baidu.com --2017-09-24 10:20:23-- http://www.baidu.com/ Resolving http... failed: Temporary failure in name resolution. wget: unable to resolve host address “http” 解决方案: [root@one ~]# vim /etc/resolv.conf The DNS server seems o…