How do I update my system with yum?

Use the update option to upgrade all of your Fedora system software to the latest version with one operation. To perform a full system update, type this command: su -c ‘yum update’ At the prompt, enter the root password. If you want to automatically update your system The yum package

How do I perform tuning with sysctl?

sysctl is an interface that allows you to make changes to a running FreeBSD system. This includes many advanced options of the TCP/IP stack and virtual memory system that can dramatically improve performance for an experienced system administrator. Over five hundred system variables can be read and set using sysctl.

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