Linux file permissions

Linux file permissions

Linux file permissions explained: What you need to understand Introduction In this article, I explain how Linux file permissions work. I use the Linux distribution Ubuntu. I’m an experienced Windows administrator and coming to Linux file permission is quite a change. With Linux, each file or directory has both a user and group that take…

Ubuntu – Manage users and groups

Ubuntu – Manage users and groups

I’m mainly a Windows administrator, but from time to time I administer the Linux environment. I use the Ubuntu distribution and in this article, I cover the long-term version of Ubuntu Server 20.04. Since I don’t use Linux often I struggle from time to time with permission. Therefore I decide to write down some important commands about creating users and groups with permission and the difference between root and a user with sudo rights. The sudo group is actually the Administrator group in the Linux universe.

Fail2ban email notification

Fail2ban email notification

You might think “Oh no, not another “how to” about installing Fail2ban. I admit there are a lot of instructions available. However, I simply could not find a clear guide on installing Fail2ban with email notification. I love Fail2ban and use it for several Linux servers. For me, it is important to receive an email when Fail2ban triggers an action.