# Getting Started with Bash Scripting

## **Introduction**

On Day 2 of my DevOps journey, I took my first steps into **Bash scripting**. Since automation is at the heart of DevOps, learning how to write scripts that execute tasks efficiently is a crucial skill. I explored the fundamentals of Bash scripting, including variables, loops, and basic scripting commands.

## **Why Learn Bash Scripting?**

Bash scripting is essential in DevOps because it enables:  
✅ **Task automation** – Reduce manual work by scripting repetitive tasks.  
✅ **System administration** – Manage files, users, and processes efficiently.  
✅ **Pipeline integration** – Automate deployments and CI/CD workflows.

## **My Key Learnings Today**

### **1️⃣ Writing My First Bash Script**

I started by creating a simple script and learning how to execute it.

* Used `nano` and `vim` to write scripts.
    
* Learned about the **shebang (**`#!/bin/bash`) to define the script interpreter.
    
* Made the script executable using `chmod +x` [`script.sh`](http://script.sh).
    

### **2️⃣ Working with Variables & User Input**

* Declared and used **variables**:
    
    ```bash
    name="Prathamesh"
    echo "Hello, $name!"
    ```
    
* Read user input using `read`:
    
    ```bash
    echo "Enter your name:"
    read username
    echo "Welcome, $username!"
    ```
    

### **3️⃣ Using Conditional Statements**

I explored how to use `if-else` to create decision-making scripts:

```bash
echo "Enter a number:"
read num
if [ $num -gt 10 ]; then
    echo "The number is greater than 10."
else
    echo "The number is 10 or less."
fi
```

### **4️⃣ Loops in Bash**

Loops make automation powerful. I learned:

* **For loop:**
    
    ```bash
    for i in {1..5}
    do
        echo "Iteration $i"
    done
    ```
    
* **While loop:**
    
    ```bash
    count=1
    while [ $count -le 5 ]
    do
        echo "Count: $count"
        ((count++))
    done
    ```
    

## **Challenges I Faced**

🔴 Remembering syntax, especially for conditions and loops.  
🔴 Understanding how variables work without explicit data types.  
🔴 Handling script execution errors.

## **What’s Next? (Day 3 Plan)**

📌 Learn **functions in Bash scripting**.  
📌 Automate simple system tasks like **file backups** and **log monitoring**.  
📌 Explore **cron jobs** for scheduling scripts.

Bash scripting is proving to be a game-changer for automation. Excited to dive deeper tomorrow! 🚀

2/n

#DevOps #BashScripting #Automation #100DaysOfDevOps