用yum命令，前提是搭建好YUM源。

固定命令格式：

yum whatprovides filename #<====filename是文件名。就寫上你要查的包或文件即可。

例子：

[root@linux-node1 ~]# yum whatprovides fuser
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

• base: mirrors.aliyun.com
• epel: mirrors.aliyun.com
• extras: mirrors.cn99.com
• updates: mirrors.cn99.com
  base/7/x86_64/filelists_db | 6.9 MB 00:00:02
  epel/x86_64/filelists | 10 MB 00:00:03
  
  extras/7/x86_64/filelists_db | 588 kB 00:00:01
  updates/7/x86_64/filelists_db | 2.3 MB 00:00:02
  psmisc-22.20-15.el7.x86_64 : Utilities for managing processes on your system
  
  Repo : base
  Matched from:
  Filename : /usr/sbin/fuser

[root@linux-node1 ~]# fuser
-bash: fuser: command not found
[root@linux-node1 ~]# yum install psmisc -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile

• base: mirrors.aliyun.com
• epel: mirrors.aliyun.com
• extras: mirrors.cn99.com
• updates: mirrors.cn99.com
  Resolving Dependencies
  --> Running transaction check
  ---> Package psmisc.x86_64 0:22.20-15.el7 will be installed
  --> Finished Dependency Resolution

Dependencies Resolved

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

Installing:
psmisc x86_64 22.20-15.el7 base 141 k

Transaction Summary

Install 1 Package

Total download size: 141 k
Installed size: 475 k
Downloading packages:
psmisc-22.20-15.el7.x86_64.rpm | 141 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : psmisc-22.20-15.el7.x86_64 1/1
Verifying : psmisc-22.20-15.el7.x86_64 1/1

Installed:
psmisc.x86_64 0:22.20-15.el7

Complete!

linux安裝軟件時提時缺包或缺文件，這時該怎麽辦？