---
title: "Yum Rollbacks"
canonical: "https://kb.uconn.edu/space/IKB/10744071203/Yum%20Rollbacks"
format: markdown
---
Faculty, students, and staff can roll back packages or updates they installed using **yum**. 

Very occasionally, installing a package or updates with **yum **can yield unexpected results. Thus, **yum** provides the ability to roll back anything it installs. Below is an example of what these commands look like:

##### **yum history output**

```
# yum history
Loaded plugins: package_upload, product-id, search-disabled-repos, security, subscription-manager
ID | Login user | Date and time | Action(s) | Altered
-------------------------------------------------------------------------------
 11 | root <root> | 2016-12-16 13:20 | Install | 8 
 10 | root <root> | 2016-12-16 10:38 | Install | 1 
 9 | root <root> | 2016-12-16 08:05 | Install | 1 
 8 | root <root> | 2016-12-15 15:37 | Install | 1 
 7 | root <root> | 2016-12-15 13:29 | Install | 10 
 6 | root <root> | 2016-12-15 12:55 | Install | 5 <
 5 | root <root> | 2016-12-08 14:51 | I, O, U | 381 >E
 4 | root <root> | 2016-12-08 14:45 | Install | 4 
 3 | root <root> | 2016-12-08 14:12 | I, U | 32 EE
 2 | root <root> | 2016-12-08 14:11 | Install | 1 
 1 | System <unset> | 2016-12-08 13:50 | Install | 644
```

  
To reverse any of these yum actions, enter the following command:

##### **Using yum undo**

```
# yum history undo "#"
```

Here, the trailing **#** is the ID number from the yum history output.

This code will put the system packages back to the version they were running prior to this yum installation or upgrade.

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