第三次作业

1. yum私有仓库的实现及博客输出。

#!/bin/bash
 
[appstream]
name=Rocky Linux \$releasever - AppStream
mirrorlist=https://mirrors.rockylinux.org/mirrorlist?arch=\$basearch&repo=AppStream-\$releasever
baseurl=https://mirrors.aliyun.com/rockylinux/8/AppStream/x86_64/os/?spm=a2c6h.25603864.0.0.523a25a4uTEdzJ
gpgcheck=1
enabled=1
countme=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rockyofficial

[baseos]
name=Rocky Linux \$releasever - BaseOS
#mirrorlist=https://mirrors.rockylinux.org/mirrorlist?arch=\$basearch&repo=BaseOS-\$releasever
baseurl=https://mirrors.aliyun.com/rockylinux/8/BaseOS/x86_64/os/?spm=a2c6h.25603864.0.0.70932f83AHfBHC
gpgcheck=1
enabled=1

[epel]
name=Rocky Linux \$releasever - Epel
baseurl=https://mirrors.aliyun.com/epel/\$releasever/Everything/\$basearch/?spm=a2c6h.25603864.0.0.783227f6FNOisA
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/epel/RPM-GPG-KEY-EPEL-8?spm=a2c6h.25603864.0.0.34275993zdp5wj

[extras]
name=Rocky Linux \$releasever - Extras
#mirro

2. 阅读《图解TCP/IP》一书，地址：https://leon-wtf.github.io/doc/%E5%9B%BE%E8%A7%A3TCPIP.pdf，有时间的可以写下读书笔记。
3.画图 TCP协议和三次握手及四次挥手。