rpm -q package名 ： 查询该package是否已经被安装了
rpm -qa | grep package名 或是package 的关键字 ： 查询该package是否已经被安装了
rpm -Uvh package名 ： 意思是update package
rpm -Uvh package名 --force ： 意思是如果该package已存在，那么强制再安装
如果多个package有依赖关系时，可以 rpm -Uvh package名1 package名2 package名3 。。。 这样的去安装，没准就可以了
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以下为例子：
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[root@ahwss-bb2 app]# rpm -Uvh compat-db-4.2.52-5.1.i386.rpm
warning: compat-db-4.2.52-5.1.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
Preparing...
########################################### [100%]
1:compat-db
########################################### [100%]
[root@ahwss-bb2 app]# rpm -Uvh compat-gcc-7.3-2.96.128.i386.rpm
warning: compat-gcc-7.3-2.96.128.i386.rpm: Header V3 DSA signature: NOKEY, key ID db42a60e
Preparing...
########################################### [100%]
1:compat-gcc
########################################### [100%]
[root@ahwss-bb2 app]# rpm -Uvh compat-gcc-c++-7.3-2.96.128.i386.rpm
warning: compat-gcc-c++-7.3-2.96.128.i386.rpm: Header V3 DSA signature: NOKEY, key ID db42a60e
error: Failed dependencies:
compat-libstdc++ = 7.3 is needed by compat-gcc-c++-7.3-2.96.128.i386
compat-libstdc++-devel = 7.3 is needed by compat-gcc-c++-7.3-2.96.128.i386
此处提示软件包依赖关系。
[root@ahwss-bb2 app]# rpm -Uvh compat-libstdc++-7.3-2.96.128.i386.rpm
warning: compat-libstdc++-7.3-2.96.128.i386.rpm: Header V3 DSA signature: NOKEY, key ID db42a60e
Preparing...
########################################### [100%]
file /usr/lib/libstdc++-3-libc6.2-2-2.10.0.so from install of compat-libstdc++-7.3-2.96.128 conflicts with file from package compat-libstdc++-296-2.96-138
[root@ahwss-bb2 app]# rpm -Uvh compat-libstdc++-devel-7.3-2.96.128.i386.rpm
warning: compat-libstdc++-devel-7.3-2.96.128.i386.rpm: Header V3 DSA signature: NOKEY, key ID db42a60e
error: Failed dependencies:
compat-libstdc++ = 7.3-2.96.128 is needed by compat-libstdc++-devel-7.3-2.96.128.i386
此处提示软件包依赖关系。
由于系统中已经存在旧版本的补丁包，故加--force选项，进行强制安装。
[root@ahwss-bb2 app]# rpm -Uvh compat-libstdc++-7.3-2.96.128.i386.rpm --force
warning: compat-libstdc++-7.3-2.96.128.i386.rpm: Header V3 DSA signature: NOKEY, key ID db42a60e
Preparing...
########################################### [100%]
1:compat-libstdc++
########################################### [100%] |
