1、自建yum仓库，分别为网络源和本地源
本地源
#主机配置#
#仓库服务器配置
[root@repo-server ~]#yum -y install httpd
[root@repo-server ~]#systemctl enable --now httpd
[root@repo-server ~]#mkdir /var/www/html/centos/8 -pv
[root@repo-server ~]#mount /dev/sr0 /mnt/
[root@repo-server ~]#cp -a /mnt1/p'
192.168.19.132
4、删除/etc/fstab文件中所有以#开头，后面至少跟一个空白字符的行的行首的#和空白字符
[root@Mageedu ~]# sed -nr 's/^# //p' /etc/fstab
/etc/fstab
Created by anaconda on Sun Dec 26 13:53:04 2021
Accessible filesystems, by reference, are maintained under '/dev/disk'
See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
5、处理/etc/fstab路径,使用sed命令取出其目录名和基名
取目录名
[root@Mageedu ~]# echo /etc/fstab/ | sed -nr 's#(/.*)(/.*)/#1#p'
/etc
取基名
[root@Mageedu ~]# echo /etc/fstab/ | sed -nr 's#(/.*)(/.*)/#2#p'
/fstab
