安装好CentOS系统之后，我们需要对环境进行一些基本的配置，让Linux更好用
注意：本文章是针对 arm32的 CentOS7进行配置的，其他系统或不同架构不要尝试。
1、首先让我们切换到 root
su root
2、进入配置文件所在目录
cd /etc/yum.repos.d/
3、以防万一先备份，其实没必要
mv CentOS-Base.repo CentOS-Base.repo.bak
4、使用 vi命令编辑 CentOS-Base.repo文件
vi CentOS-Base.repo
替换为下面的内容
CentOS-Base.repo
#
The mirror system uses the connecting IP address of the client and the
update status of each mirror to pick mirrors that are updated to and
geographically close to the client. You should use this for CentOS updates
unless you are manually picking other mirrors.
#
If the mirrorlist= does not work for you, as a fall back you can try the
remarked out baseurl= line instead.
#
#
[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/os/$basearch/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#released updates
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/updates/$basearch/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/extras/$basearch/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
5、设置缓存，并更新镜像配置
yum makecache
yum -y update
1、 yum安装
yum -y install wget
2、 rpm安装
可以将 rpm包放到挂载的目录，在系统中用 mv移动工作目录
mv /mnt/linux-share/wget-1.14-18.el7_6.1.armv7hl.rpm /home/sw-code/ # 注意自己的
安装 rpm包
rpm ivh wget-1.14-18.el7_6.1.armv7hl.rpm
1、安装
yum -y install lsof
2、使用 lsof查看端口占用情况
lsof -i tcp:80
1、 top显示当前系统正在执行的进程的相关信息，包括进程ID、内存占用率、CPU占用率等
top
2、查看分区和磁盘
lsblk
3、查看空间使用情况
df -h
4、查看内存大小
free -h
Original: https://www.cnblogs.com/sw-code/p/14994444.html
Author: sw-code
Title: 安卓手机改造服务器——基本环境配置（CentOS7 arm32）
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