我需要安装以下软件包：
gcc: gcc-c++-4.4.7-3.el6.x86_64
Flex: flex-2.5.35-8.el6.x86_64
Bison: bison-2.4.1-5.el6.x86_64
Glib: glib2-devel-2.22.5-7.el6.x86_64 & glibc-devel-2.12-1.107.el6_4.2.x86_64
Pcre: pcre-7.8-6.el6.x86_64 & pcre-devel-7.8-6.el6.x86_64
logrotate: logrotate-3.7.8-16.el6.x86_64
sendmail: sendmail-8.14.4-8.el6.x86_64 & sendmail-cf-8.14.4-8.el6.noarch
使用yum下面的存储库。
# yum repolist
Loaded plugins: package_upload, product-id, search-disabled-repos, subscription-manager
repo id repo name status
!RBC_RBC-Tools-RHEL7_rbc-tools-rhel-7Server-x86_64-rpms rbc-tools-rhel-7Server-x86_64-rpms 9
!rhel-7-server-extras-rpms/x86_64 Red Hat Enterprise Linux 7 Server - Extras (RPMs) 747
!rhel-7-server-optional-rpms/7Server/x86_64 Red Hat Enterprise Linux 7 Server - Optional (RPMs) 13,201
!rhel-7-server-rpms/7Server/x86_64 Red Hat Enterprise Linux 7 Server (RPMs) 18,022
!rhel-7-server-satellite-tools-6.1-rpms/x86_64 Red Hat Satellite Tools 6.1 (for RHEL 7 Server) (RPMs) 86
!rhel-7-server-supplementary-rpms/7Server/x86_64 Red Hat Enterprise Linux 7 Server - Supplementary (RPMs) 270
repolist: 32,335
但是，我收到以下错误：
# yum install gcc-c++-4.4.7-3.el6.x86_64
Loaded plugins: package_upload, product-id, search-disabled-repos, subscription-manager
RBC_RBC-Tools-RHEL7_rbc-tools-rhel-7Server-x86_64-rpms | 1.8 kB 00:00:00
rhel-7-server-extras-rpms | 2.0 kB 00:00:00
rhel-7-server-optional-rpms | 2.0 kB 00:00:00
rhel-7-server-rpms | 2.0 kB 00:00:00
rhel-7-server-satellite-tools-6.1-rpms | 2.1 kB 00:00:00
rhel-7-server-supplementary-rpms | 2.3 kB 00:00:00
No package gcc-c++-4.4.7-3.el6.x86_64 available.
Error: Nothing to do
如何解决这个错误？我需要添加更多存储库吗？如果是，怎么办？
答案1
如果您想要安装 GCC，您所需要做的就是yum install gcc-c++如果您有权访问它们，它就会获取其依赖项，否则会出错。对于其余的软件包，只需在 <名称>-<版本号> 之前输入文本名称即可。yum install flex bison sendmail只需查看其他软件包是否作为依赖项安装，如果没有，请返回并使用yum install <name>.
如果您需要更多帮助来理解yum，只需键入man yum有关的更多参考资料和详细信息yum。
[root@server thebtm]# yum install gcc
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirror.its.sfu.ca
* epel: muug.ca
* extras: muug.ca
* ius: mirrors.kernel.org
* updates: mirror.its.sfu.ca
Package gcc-4.8.5-28.el7_5.1.x86_64 already installed and latest version
Nothing to do
未安装时的示例：
[root@fada2474faea iop]# yum install gcc-c++
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
epel/x86_64/metalink | 16 kB 00:00:00
* base: mirror.its.sfu.ca
* epel: mirrors.cat.pdx.edu
* extras: mirror.its.sfu.ca
* ius: mirrors.kernel.org
* updates: mirror.its.sfu.ca
base | 3.6 kB 00:00:00
epel | 3.2 kB 00:00:00
extras | 3.4 kB 00:00:00
ius | 2.3 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/2): epel/x86_64/updateinfo | 933 kB 00:00:00
(2/2): epel/x86_64/primary | 3.6 MB 00:00:00
epel 12647/12647
Resolving Dependencies
--> Running transaction check
---> Package gcc-c++.x86_64 0:4.8.5-28.el7_5.1 will be installed
--> Processing Dependency: libstdc++-devel = 4.8.5-28.el7_5.1 for package: gcc-c++-4.8.5-28.el7_5.1.x86_64
--> Processing Dependency: gcc = 4.8.5-28.el7_5.1 for package: gcc-c++-4.8.5-28.el7_5.1.x86_64
--> Processing Dependency: libmpfr.so.4()(64bit) for package: gcc-c++-4.8.5-28.el7_5.1.x86_64
--> Processing Dependency: libmpc.so.3()(64bit) for package: gcc-c++-4.8.5-28.el7_5.1.x86_64
--> Running transaction check
---> Package gcc.x86_64 0:4.8.5-28.el7_5.1 will be installed
--> Processing Dependency: cpp = 4.8.5-28.el7_5.1 for package: gcc-4.8.5-28.el7_5.1.x86_64
--> Processing Dependency: glibc-devel >= 2.2.90-12 for package: gcc-4.8.5-28.el7_5.1.x86_64
---> Package libmpc.x86_64 0:1.0.1-3.el7 will be installed
---> Package libstdc++-devel.x86_64 0:4.8.5-28.el7_5.1 will be installed
---> Package mpfr.x86_64 0:3.1.1-4.el7 will be installed
--> Running transaction check
---> Package cpp.x86_64 0:4.8.5-28.el7_5.1 will be installed
---> Package glibc-devel.x86_64 0:2.17-222.el7 will be installed
--> Processing Dependency: glibc-headers = 2.17-222.el7 for package: glibc-devel-2.17-222.el7.x86_64
--> Processing Dependency: glibc-headers for package: glibc-devel-2.17-222.el7.x86_64
--> Running transaction check
---> Package glibc-headers.x86_64 0:2.17-222.el7 will be installed
--> Processing Dependency: kernel-headers >= 2.2.1 for package: glibc-headers-2.17-222.el7.x86_64
--> Processing Dependency: kernel-headers for package: glibc-headers-2.17-222.el7.x86_64
--> Running transaction check
---> Package kernel-headers.x86_64 0:3.10.0-862.11.6.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================================================================================================
Package Arch Version Repository Size
=============================================================================================================================================================================================================================================
Installing:
gcc-c++ x86_64 4.8.5-28.el7_5.1 updates 7.2 M
Installing for dependencies:
cpp x86_64 4.8.5-28.el7_5.1 updates 5.9 M
gcc x86_64 4.8.5-28.el7_5.1 updates 16 M
glibc-devel x86_64 2.17-222.el7 base 1.1 M
glibc-headers x86_64 2.17-222.el7 base 678 k
kernel-headers x86_64 3.10.0-862.11.6.el7 updates 7.1 M
libmpc x86_64 1.0.1-3.el7 base 51 k
libstdc++-devel x86_64 4.8.5-28.el7_5.1 updates 1.5 M
mpfr x86_64 3.1.1-4.el7 base 203 k
Transaction Summary
=============================================================================================================================================================================================================================================
Install 1 Package (+8 Dependent packages)
Total download size: 40 M
Installed size: 84 M
Is this ok [y/d/N]: n
Exiting on user command
Your transaction was saved, rerun it with:
yum load-transaction /tmp/yum_save_tx.2018-08-16.23-11.GY0gCD.yumtx