1. 使用cat /etc/yum.repos.d/mycdrom.repo命令查询仓库：

[root@localhost ~]# cat /etc/yum.repos.d/mycdrom.repo [mycdrom] name=My CDROM Repository baseurl=file:///mnt/cdrom enabled=1 gpgcheck=0

2）使用该yum仓库，安装gcc：

[root@localhost ~]# yum install gcc Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile

• base: mirrors.aliyun.com
• extras: mirrors.aliyun.com
• updates: mirrors.aliyun.com Resolving Dependencies --> Running transaction check ---> Package gcc.x86_64 0:4.8.5-44.el7 will be installed --> Processing Dependency: cpp = 4.8.5-44.el7 for package: gcc-4.8.5-44.el7.x86_64 --> Processing Dependency: glibc-devel >= 2.2.90-12 for package: gcc-4.8.5-44.el7.x86_64 --> Processing Dependency: libmpc.so.3()(64bit) for package: gcc-4.8.5-44.el7.x86_64 --> Running transaction check ---> Package cpp.x86_64 0:4.8.5-44.el7 will be installed ---> Package glibc-devel.x86_64 0:2.17-307.el7.1 will be installed --> Processing Dependency: glibc-headers = 2.17-307.el7.1 for package: glibc-devel-2.17-307.el7.1.x86_64 --> Processing Dependency: glibc = 2.17-307.el7.1 for package: glibc-devel-2.17-307.el7.1.x86_64 --> Processing Dependency: glibc-headers for package: glibc-devel-2.17-307.el7.1.x86_64 ---> Package libmpc.x86_64 0:1.0.1-3.el7 will be installed --> Running transaction check ---> Package glibc.x86_64 0:2.17-307.el7.1 will be installed --> Processing Dependency: glibc-common = 2.17-307.el7.1 for package: glibc-2.17-307.el7.1.x86_64 ---> Package glibc-headers.x86_64 0:2.17-307.el7.1 will be installed --> Running transaction check ---> Package glibc-common.x86_64 0:2.17-307.el7.1 will be installed --> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================================================================================= Package Arch Version Repository Size

Installing: gcc x86_64 4.8.5-44.el7 mycdrom 16 M Installing for dependencies: cpp x86_64 4.8.5-44.el7 mycdrom 5.9 M glibc-devel x86_64 2.17-307.el7.1 mycdrom 1.1 M glibc-headers x86_64 2.17-307.el7.1 mycdrom 668 k libmpc x86_64 1.0.1-3.el7 mycdrom 51 k Installing for dependencies: glibc x86_64 2.17-307.el7.1 base 3.6 M glibc-common x86_64 2.17-307.el7.1 base 11 M

Transaction Summary

Install 1 Package (+6 Dependent packages)

Total download size: 38 M Installed size: 111 M Is this ok [y/d/N]: y Downloading packages: (1/7): libmpc-1.0.1-3.el7.x86_64.rpm | 51 kB 00:00:00
(2/7): gcc-4.8.5-44.el7.x86_64.rpm | 16 MB 00:00:00
(3/7): cpp-4.8.5-44.el7.x86_64.rpm | 5.9 MB 00:00:00
(4/7): glibc-headers-2.17-307.el7.1.x86_64.rpm | 668 kB 00:00:00
(5/7): glibc-devel-2.17-307.el7.1.x86_64.rpm | 1.1 MB 00:00:00
(6/7): glibc-2.17-307.el7.1.x86_64.rpm | 3.6 MB 00:00:00
(7/7): glibc-common-2.17-307.el7.1.x86_64.rpm | 11 MB 00:00:00

Total 22 MB/s | 38 MB 00:00:01
Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : glibc-common-2.17-307.el7.1.x86_64 1/7 Installing : glibc-2.17-307.el7.1.x86_64 2/7 Installing : libmpc-1.0.1-3.el7.x86_64 3/7 Installing : glibc-headers-2.17-307.el7.1.x86_64 4/7 Installing : glibc-devel-2.17-307.el7.1.x86_64 5/7 Installing : cpp-4.8.5-44.el7.x86_64 6/7 Installing : gcc-4.8.5-44.el7.x86_64 7/7 Verifying : gcc-4.8.5-44.el7.x86_64 1/7 Verifying : cpp-4.8.5-44.el7.x86_64 2/7 Verifying : glibc-common-2.17-307.el7.1.x86_64 3/7 Verifying : glibc-devel-2.17-307.el7.1.x86_64 4/7 Verifying : glibc-headers-2.17-307.el7.1.x86_64 5/7 Verifying : glibc-2.17-307.el7.1.x86_64 6/7 Verifying : libmpc-1.0.1-3.el7.x86_64 7/7

Installed: gcc.x86_64 0:4.8.5-44.el7

Dependency Installed: cpp.x86_64 0:4.8.5-44.el7 glibc-devel.x86_64 0:2.17-307.el7.1 glibc-headers.x86_64 0:2.17-307.el7.1
libmpc.x86_64 0:1.0.1-3.el7 glibc.x86_64 0:2.17-307.el7.1 glibc-common.x86_64 0:2.17-307.el7.1

Complete