CentOS is the most popular and widely used Linux operating system (OS) on VPS / Dedicated server. You must keep your CentOS updated for security reasons. Below are the basic SSH commands to update CentOS on a VPS / Dedicated server.
Check for update
It will check your machine to see if any update is available.
You just need to run one command to apply all updates. Below command will update your machine.
You can also run yum update command with -y option.
yum –y update
The –y option will answer yes to all prompts such as confirmation that you want to install or update a particular package.