A few years ago, many people installed the operating system was used a disc to make a bootable disc. But with the evolution of laptop products, more and more machines have no optical disc drive.

Ubuntu is a famous version in Linux family. Today I want to introduce how to install Ubuntu (18.04, or other version can use the similar steps).

So far, I didn’t put data too much on my Linux notebook, so I backup my file was very easy. About my program, my code, I always push to Github or private GitLab. I have also written some novels, but I always upload them to Google Drive. So “backup my files” is always a easy thing to me.

Problem

I have had the same problem twice when I installing the Nvidia driver. The first time only me in server so the environment is purely, but the next time I have more partner in server, environment is much more complicated than the first time.

I spend more time than the first time, so I think I need to note how to solve it prevent I have this problem again.

Introduction

During our long use of computers, inevitably there will be times when others are maliciously attacked. But we have a great tool in Linux: “fail2ban”. Fail2ban can prevent others from connecting via ssh and crack your password.