先找版本号，再找对应的rpm包
[root@yw-centos ~]# cat /proc/version
Linux version 3.10.0-957.21.2.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) ) #1 SMP Wed Jun 5
[root@yw-centos ~]#
[root@yw-centos ~]# wget http://vault.centos.org/7.6.1810/os/x86_64/Packages/telnet-0.17-64.el7.x86_64.rpm
--2020-04-27 03:19:15-- http://vault.centos.org/7.6.1810/os/x86_64/Packages/telnet-0.17-64.el7.x86_64.rpm
Resolving vault.centos.org (vault.centos.org)... failed: Temporary failure in name resolution.
wget: unable to resolve host address ‘vault.centos.org’
本地下载好之后上传
[root@yw-centos ~]# pwd
/root
[root@yw-centos ~]#
[root@yw-centos ~]# cd Download/
[root@yw-centos Download]# ls -l
total 22332
drwxr-xr-x. 19 501 501 4096 Jun 18 2019 Python-3.7.0
-rw-r--r--. 1 root root 22745726 Jun 27 2018 Python-3.7.0.tgz
-rw-r--r--. 1 root root 65632 Apr 27 03:19 telnet-0.17-64.el7.x86_64.rpm
-rw-r--r--. 1 root root 41804 Apr 27 03:19 telnet-server-0.17-64.el7.x86_64.rpm
[root@yw-centos Download]#
[root@yw-centos Download]# rpm -ivh telnet-0.17-64.el7.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:telnet-1:0.17-64.el7 ################################# [100%]
[root@yw-centos Download]#
[root@yw-centos Download]# rpm -ivh telnet-server-0.17-64.el7.x86_64.rpm
Preparing... ################################# [100%]
Updating / installing...
1:telnet-server-1:0.17-64.el7 ################################# [100%]
[root@yw-centos Download]#
