Well hello again, script wizard! 🧙  It's refreshing to see you back for round two. Judging by your return, I'll take a wild guess that the first installment of my Bash scripting tutorial sparked a fire in you. Get ready to stoke those flames as we dive deeper into the magic of Bash scripting. You've already dipped your toes into the world of Bash scripting; now it's time to jump in headfirst. From loops and functions to file handling, we'll cover it all. Just remember, practice makes perfect. So, let's roll up our sleeves and get scripting! Advanced Bash Scripting Techniques 1. Looping Around in Bash A significant part of scripting is making your code do the heavy lifting. 1.1 For Loops A loop in Bash allows you to repeat a series of commands a set number of times. Here's an example: for And one of the most effective ways to do this is by using loops. In Bash, we have loops, loops, and loops. for while until for i in {1..5}
do
   echo "Welcome to loop iteration number $i!"
done 1.2 While Loops A loop keeps running as long as a condition is true. Here's how it looks: while count=1
while [ $count -le 5 ]
do
   echo "You're in loop iteration number $count!"
   count=$((count+1))
done 1.3 Until Loops An loop is the reverse of a loop. It keeps running until a condition is true. Here's an example: until while count=1
until [ $count -gt 5 ]
do
   echo "You're in loop iteration number $count!"
   count=$((count+1))
done 2. Defining Functions in Bash In the world of Bash scripting, functions are our best friends. They help us avoid repeating the same code. Here's how to define a function: greet() {
   echo "Hello, $1!"
}

greet "World" In this script, is a function that takes one argument and prints a greeting. greet 3. File Handling in Bash File handling is another crucial aspect of Bash scripting. With it, you can create, read, write, and delete files, among other things. 3.1 Creating Files You can create a new file using the command: touch touch newfile.txt 3.2 Reading Files To read a file, you can use the command: cat cat newfile.txt 3.3 Writing to Files The command can be used to write to a file: echo echo "Hello, World!" > newfile.txt 3.4 Deleting Files To delete a file, use the command: rm rm newfile.txt What Can I Do With File Handling in Bash Scripting? File handling in Bash scripting provides a powerful set of tools for manipulating files on your system. You can read, write, append, and delete files. Additionally, you can traverse directories and process multiple files at once, making file handling a key skill for any Bash scripter. What Are Some Best Practices When Scripting in Bash? There are several best practices for Bash scripting. Here are a few: Use clear and descriptive names for your scripts, variables, and functions. Comment your code generously to explain what it does. Keep your scripts as simple as possible. The easier they are to read, the easier they are to maintain and debug. Make use of functions to avoid repeating code. Always test your scripts thoroughly before using them in a live environment. To round off the second part of our Bash scripting tutorial, we explored advanced techniques including loops, functions, and file handling. With these tools at your disposal, you're well on your way to becoming a Bash scripting guru. However, remember that the key to mastery is practice. So, don't hesitate to use these techniques in your daily tasks and automate as much as possible. Happy scripting, and stay tuned for the next installment where we'll dive into even more advanced Bash scripting techniques! echo "Happy scripting, until next time!" Support me, and unleash your inner ‘Jinius’ with Jin Park - dive in now! @ ❤️ https://ko-fi.com/jiniusme

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Cranking Up Your Terminal Game: Bash Scripting Tutorial – Part 2

Too Long; Didn't Read

Jin Park

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Cranking Up Your Terminal Game: Bash Scripting Tutorial – Part 2

Too Long; Didn't Read

Jin Park

STORY’S CREDIBILITY

Original Reporting

Guide

About Author

TOPICS

THIS ARTICLE WAS FEATURED IN...

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