linux下面安装软件
yum install rpm -ivh 编译安装 三部曲：./configure make make install 卸载 rpm -e
安装方法
1）通过yum安装软件 需要你联网
通过ping 命令测试是否联网
2) 更改系统的yum源 阿里云
#https://opsx.alibaba.com/mirror 来源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
1.更改系统的yum源
#阿里云 mirrors.aliyun.com
https://opsx.alibaba.com/mirror
#清华
https://mirrors.tuna.tsinghua.edu.cn/help/centos/
#网易
http://mirrors.163.com/.help/centos.html
3)安装常用软件
yum install -y tree bash-completion wget vim # bash-completion命令 参数补全工具 wget 相当于迅雷一样 #vim类似 notepad++
4)关闭SElinux
2.关闭SElinux
rpm -qa
#-qa query all
rpm -qa
1#永久 修改配置文件 重启服务器之后生效
# enforcing - 已开启 正在运行
# permissive - selinux关闭 警告提示
# disabled - 彻底关闭
5)关闭防火墙
systemctl 管理服务
如何关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
getenforce
systemctl status firewalld
systemctl is-active firewalld
systemctl is-enabled firewalld
systemctl enable firewalld.service
6)检查crond状态
[[email protected] ~]# rpm -qa cronie
cronie-1.4.11-17.el7.x86_64
[[email protected] ~]# systemctl is-active crond.service
active
[[email protected] ~]# systemctl is-enabled crond.service
enabled
原文地址：https://www.cnblogs.com/zjchao/p/8955031.html