Get ready for a thrilling ride on day four of my blogging journey as we unravel the power of Basic Linux Shell Scripting. 🌟 From automation to efficiency, each command holds the key to DevOps mastery! 💻✨ Thank you so much for all the shares and impression , it really boosted my LinkedIn account reach 🌟👩‍💻🚀

WHAT THE HECK IS KERNEL ?

The Heartbeat of Your System! 💖🚀

Imagine your computer as a bustling city, and at its vibrant core is the Kernel – the ultimate maestro orchestrating everything! 🎶 This superhero of software is the bridge between your hardware and software, managing tasks like a cosmic conductor guiding a symphony. 🌌🔧 It handles requests, allocates resources, and ensures that your favorite apps run seamlessly – a digital guardian ensuring your computing journey is nothing short of spectacular! 🌟 So, next time you click, type, or game away, remember to salute the Kernel, the unsung hero behind the scenes!

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WHAT THE HECK IS SHELL ?

🐚 Shell: Your Tech Magic Wand! ✨💻

he shell is not just a mundane interface; it's your gateway to a digital wonderland! 🚪✨ Think of it as a powerful magic wand that lets you command your computer with a flick! 🪄💫 The shell is your personal genie, ready to grant wishes in the form of executing commands, navigating files, and making your tech dreams come true!

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WHAT THE HECK IS LINUX SHELL SCRIPTING ?

🐧🚀 Linux Shell Scripting: Power in Simplicity!

Linux Shell Scripting is like your tech choreographer, choreographing a dance of commands! 🎭💻 In simple terms, it's writing scripts to automate tasks, making your computer do tricks at your command. 🤖🔧 Whether you're a coding maestro or a newbie, shell scripting is your backstage pass to streamlining tasks and unleashing efficiency! 🌐🚀

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Understanding #!/bin/bash vs. #!/bin/sh:

The shebang (#!/bin/bash or #!/bin/sh) is a directive at the beginning of a shell script that specifies the shell interpreter to be used. #!/bin/bash indicates the Bash shell, while #!/bin/sh typically points to the system's default shell. In many systems, /bin/sh is a symbolic link to /bin/bash, so they might behave similarly. However, if a script requires specific Bash features, it's recommended to use #!/bin/bash.

Now, let's create the requested shell scripts:

1. Shell Script to Print a Message:

#!/bin/bash

echo "I will complete #90DaysOfDevOps challenge"

2. Shell Script to Take User Input:

#!/bin/bash

echo "Enter your name:"
read username
echo "Hello, $username! Welcome to the script."

3. Shell Script to Use Command Line Arguments:

#!/bin/bash

echo "The script name is: $0"
echo "First argument: $1"
echo "Second argument: $2"

4. Example of If Else in Shell Scripting:

#!/bin/bash

num1=5
num2=10

if [ $num1 -eq $num2 ]; then
  echo "Numbers are equal"
elif [ $num1 -lt $num2 ]; then
  echo "$num1 is less than $num2"
else
  echo "$num1 is greater than $num2"
fi

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