100 DAYS OF DEVOPS

Linux Commands — Day 1 🐧

Today marks day one of my journey toward becoming a DevOps Engineer.

I’ve started this journey with the help of KodeKloud Engineer and LabEx. My first KodeKloud task was to create a Linux user with a non-interactive shell.

Along the way, I learned about SSH (Secure Shell), different types of Linux shells, and how Linux manages users through files such as /etc/passwd.

Here are some of the commands I used:

ssh user@server
# Connect to a specific server

sudo useradd -s /sbin/nologin jim
# Create a user with a non-interactive shell

getent passwd jim
# Verify that the user was created

The output helped me understand how Linux represents users:

jim:x:1001:1001::/home/jim:/sbin/nologin
│   │ │    │    │ │         │
│   │ │    │    │ │         └── Login shell
│   │ │    │    │ └──────────── Home directory
│   │ │    │    └────────────── User information/comment
│   │ │    └─────────────────── GID
│   │ └──────────────────────── UID
│   └────────────────────────── Password placeholder
└────────────────────────────── Username

It may seem like a small task, but understanding these fundamentals is important as I continue building my Linux and DevOps skills.

Day 1 done. More to learn.