Linux基础：yum provides 查询某个程序所在安装包

已知apache 的一个压测工具名为：ab，但是不知道应该安装那个安装包的情况，使用yum provides指令参考如下：

# yum provides ab
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
base                                                                         | 3.6 kB  00:00:00     
epel                                                                         | 4.7 kB  00:00:00     
extras                                                                       | 3.4 kB  00:00:00     
updates                                                                      | 3.4 kB  00:00:00     
(1/4): extras/7/x86_64/primary_db                                            | 188 kB  00:00:00     
(2/4): epel/x86_64/updateinfo                                                | 988 kB  00:00:00     
(3/4): epel/x86_64/primary_db                                                | 6.7 MB  00:00:00     
(4/4): updates/7/x86_64/primary_db                                           | 3.4 MB  00:00:00     
epel/x86_64/filelists_db                                                     |  11 MB  00:00:00     
extras/7/x86_64/filelists_db                                                 | 236 kB  00:00:00     
updates/7/x86_64/filelists_db                                                | 3.0 MB  00:00:00     
httpd-tools-2.4.6-88.el7.centos.x86_64 : Tools for use with the Apache HTTP Server
Repo        : base
Matched from:
Filename    : /usr/bin/ab

查询到安装包为：httpd-tools

直接安装：

# yum install httpd-tools -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package httpd-tools.x86_64 0:2.4.6-88.el7.centos will be installed
--> Processing Dependency: libaprutil-1.so.0()(64bit) for package: httpd-tools-2.4.6-88.el7.centos.x86_64
--> Processing Dependency: libapr-1.so.0()(64bit) for package: httpd-tools-2.4.6-88.el7.centos.x86_64
--> Running transaction check
---> Package apr.x86_64 0:1.4.8-3.el7_4.1 will be installed
---> Package apr-util.x86_64 0:1.5.2-6.el7 will be installed
--> Finished Dependency Resolution
 
Dependencies Resolved
 
====================================================================================================
 Package                 Arch               Version                          Repository        Size
====================================================================================================
Installing:
 httpd-tools             x86_64             2.4.6-88.el7.centos              base              90 k
Installing for dependencies:
 apr                     x86_64             1.4.8-3.el7_4.1                  base             103 k
 apr-util                x86_64             1.5.2-6.el7                      base              92 k
 
Transaction Summary
====================================================================================================
Install  1 Package (+2 Dependent packages)
 
Total download size: 286 k
Installed size: 584 k
Downloading packages:
(1/3): apr-util-1.5.2-6.el7.x86_64.rpm                                       |  92 kB  00:00:00     
(2/3): httpd-tools-2.4.6-88.el7.centos.x86_64.rpm                            |  90 kB  00:00:00     
(3/3): apr-1.4.8-3.el7_4.1.x86_64.rpm                                        | 103 kB  00:00:02     
----------------------------------------------------------------------------------------------------
Total                                                               106 kB/s | 286 kB  00:00:02     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : apr-1.4.8-3.el7_4.1.x86_64                                                       1/3 
  Installing : apr-util-1.5.2-6.el7.x86_64                                                      2/3 
  Installing : httpd-tools-2.4.6-88.el7.centos.x86_64                                           3/3 
  Verifying  : httpd-tools-2.4.6-88.el7.centos.x86_64                                           1/3 
  Verifying  : apr-util-1.5.2-6.el7.x86_64                                                      2/3 
  Verifying  : apr-1.4.8-3.el7_4.1.x86_64                                                       3/3 
 
Installed:
  httpd-tools.x86_64 0:2.4.6-88.el7.centos                                                          
 
Dependency Installed:
  apr.x86_64 0:1.4.8-3.el7_4.1                     apr-util.x86_64 0:1.5.2-6.el7                    
 
Complete!