> For the complete documentation index, see [llms.txt](https://xoops.gitbook.io/xoonips-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xoops.gitbook.io/xoonips-tutorial/3installation/4.-customize-centos5/42system_update.md).

# 4.2. System Update

Log in as admin by the following commands.

| **xoonips-server login: admin**  | ← Enter "admin" as a log in user.  |
| -------------------------------- | ---------------------------------- |
| **Password:**                    | ← Enter admin password (not shown) |
| **\[admin\@xoonips-server \~]$** | ← (As admin)                       |

Execute a system update as root user by using the following commands.

| **\[admin\@xoonips-server \~]$ su -** | ← Execute su command to become root. |
| ------------------------------------- | ------------------------------------ |
| **Password:**                         | ← Enter root password.               |
| **\[root\@xoonips-server \~]#**       | ← (As root)                          |

Go on the following procedures under the root authority.

| **\[root\@xooinps-server \~]# yum -y update** | ← Execute a system update command. |
| --------------------------------------------- | ---------------------------------- |

The required time depends on the network condition or computer performance.

Now the system has been updated.