From the course: Practical Linux for Network Engineers: Part 1
Join today to access over 22,600 courses taught by industry experts.
Why? - Linux Tutorial
From the course: Practical Linux for Network Engineers: Part 1
Why?
- [Instructor] In this example, I've connected to Ubuntu-1 and I'm SSH-ing to the Ubuntu server. I'm only doing that so that the recordings are clearer. Now, for security reasons, users and groups are really important in Linux. cat /etc/passwd shows us various user accounts. I'll use less to do the same thing. We've got the root account and we've got various other accounts, including david. So, why do we have these various user accounts in Linux? We can explain one of the reasons by looking at the processes running on the Linux system. So, I'll pipe the processes to less and notice we have various processes started by various user accounts. So, root has started a lot of processes, and then we have other processes started by other user accounts, including david. These processes running on the Linux system need to access files on the Linux system. So root, as we've discussed, has full access to the system, but david doesn't have full access to the system. Once again, if david tries to…
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.