CentOS 7 设置主机名

设置主机名：

hostnamectl set-hostname CHANGE_YOUR_HOSTNAME_HERE

查看当前主机信息：

hostnamectl status

CentOS7 80 端口开启远程访问

运行如下命令：

$ sudo firewall-cmd --zone=public --add-port=80/tcp --permanent
$ sudo firewall-cmd --reload

I am using CentOS6.4. When I was debugging a piece of c code, it said “Missing separate debuginfos, use: debuginfo-install glibc…”

After asking Google. I finally solved the problem.

yum --enablerepo=debug install glibc-debuginfo