What should I do when the Linux installation software is missing packets or missing files?

Linux installation software prompts for missing or missing files, you do not know the software name or package name, then what to do? Let me tell you right now:

Use the Yum command, provided the Yum source is set up.

Fixed command format:

Yum whatprovides filename #<====filename is the file name. Just write the package or file you want to check.

Example:

[email protected] ~]# 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 | Ten 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

[Email protected] ~]# Fuser
-bash:fuser:command not found
[email protected] ~]# 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 'll 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!

What should I do when the Linux installation software is missing packets or missing files?