CentOS7配置阿里yum源

sudo cp -R /etc/yum.repos.d /etc/yum.repos.d.origin
sudo curl http://mirrors.aliyun.com/repo/Centos-7.repo -o /etc/yum.repos.d/CentOS-Base.repo
sudo yum clean all && sudo yum makecache
sudo yum -y update 

C开发环境搭建

安装 Development Tools 包含 GCC 编译器

sudo yum -y upgrade && yum -y group install "Development Tools"
gcc --version

安装man手册

sudo yum -y upgrade && yum -y install man-pages

VIM安装及简单配置

sudo yum -y upgrade && yum -y install vim*
touch ~/.vimrc
source ~/.vimrc

普通用户添加到sudo用户组

su - root
cd /etc/sudoers.d
vim test
xxx ALL=(ALL:ALL)  NOPASSWD:ALL  # xxx为你的用户名