问题:
root@wiki:~# sudo lsb_release -a sudo: unable to resolve host wiki No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 Codename: trusty
可见我的主机名为wiki(机器hostname),每次执行sudo 就会出现这个警告sudo: unable to resolve host wiki。
解决办法:修改/etc/hosts
改前:127.0.0.1 localhost
改后:127.0.0.1 localhost wiki