1、问题
[root@linuxprobe linuxprobe]# screen -S test ## RHEL8自身不带screen bash: screen: command not found... Failed to search for file: Cannot update read-only repo [root@linuxprobe linuxprobe]# screen --version bash: screen: command not found... Failed to search for file: Cannot update read-only repo
2、yum安装
[root@linuxprobe linuxprobe]# yum install screen ## 没有配置yum仓库 Updating Subscription Management repositories. Unable to read consumer identity This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Error: There are no enabled repos.
3、配置yum仓库
[root@linuxprobe linuxprobe]# df -h ## 查看当前挂载情况 Filesystem Size Used Avail Use% Mounted on devtmpfs 969M 0 969M 0% /dev tmpfs 984M 0 984M 0% /dev/shm tmpfs 984M 9.6M 974M 1% /run tmpfs 984M 0 984M 0% /sys/fs/cgroup /dev/mapper/rhel-root 17G 3.9G 14G 23% / /dev/sda1 1014M 152M 863M 15% /boot tmpfs 197M 20K 197M 1% /run/user/42 tmpfs 197M 2.3M 195M 2% /run/user/0 /dev/sr0 6.7G 6.7G 0 100% /run/media/root/RHEL-8-0-0-BaseOS-x86_64 [root@linuxprobe linuxprobe]# mkdir -p /media/cdrom ## 创建光盘挂载点 [root@linuxprobe linuxprobe]# mount /dev/cdrom /media/cdrom/ ## 挂载光盘 mount: /media/cdrom: WARNING: device write-protected, mounted read-only. [root@linuxprobe linuxprobe]# df -h ## 查看挂载情况 Filesystem Size Used Avail Use% Mounted on devtmpfs 969M 0 969M 0% /dev tmpfs 984M 0 984M 0% /dev/shm tmpfs 984M 9.6M 974M 1% /run tmpfs 984M 0 984M 0% /sys/fs/cgroup /dev/mapper/rhel-root 17G 3.9G 14G 23% / /dev/sda1 1014M 152M 863M 15% /boot tmpfs 197M 20K 197M 1% /run/user/42 tmpfs 197M 2.4M 195M 2% /run/user/0 /dev/sr0 6.7G 6.7G 0 100% /media/cdrom
4、设定光盘挂载为开机自动启动
[root@linuxprobe linuxprobe]# cat /etc/fstab ## 查看开机自动启动配置文件 # # /etc/fstab # Created by anaconda on Thu Oct 29 01:05:13 2020 # # 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. # # After editing this file, run 'systemctl daemon-reload' to update systemd # units generated from this file. # /dev/mapper/rhel-root / xfs defaults 0 0 UUID=4d9618c5-4252-4910-8e97-d4d28755ed1a /boot xfs defaults 0 0 /dev/mapper/rhel-swap swap swap defaults 0 0 [root@linuxprobe linuxprobe]# echo -e "/dev/cdrom\t/media/cdrom\tiso9660\tdefaults\t0\t0" >> /etc/fstab ## 修改开机自动启动配置文件 [root@linuxprobe linuxprobe]# cat /etc/fstab ## 查看开机自动启动配置文件 # # /etc/fstab # Created by anaconda on Thu Oct 29 01:05:13 2020 # # 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. # # After editing this file, run 'systemctl daemon-reload' to update systemd # units generated from this file. # /dev/mapper/rhel-root / xfs defaults 0 0 UUID=4d9618c5-4252-4910-8e97-d4d28755ed1a /boot xfs defaults 0 0 /dev/mapper/rhel-swap swap swap defaults 0 0 /dev/cdrom /media/cdrom iso9660 defaults 0 0
5、创建yum仓库的配置文件
vim rhel8.repo ##进行编辑，保存退出 [BaseOS] name=BaseOS baseurl=file:///media/cdrom/BaseOS gpgcheck=0 enbaled=1 [AppStream] name=AppStream baseurl=file:///media/cdrom/AppStream gpgcheck=0 enabled=1
6、测试yum仓库
yum install httpd -y
7、安装screen
[root@linuxprobe yum.repos.d]# yum install screen Updating Subscription Management repositories. Unable to read consumer identity This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Last metadata expiration check: 0:01:06 ago on Thu 29 Oct 2020 01:21:54 PM CST. No match for argument: screen Error: Unable to find a match
8、执行如下命令
yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm -y
9、再次安装screen
yum install screen -y
10、测试screen
[root@linuxprobe yum.repos.d]# screen --version Screen version 4.06.02 (GNU) 23-Oct-17