How To Write Bash Scripts In Linux - Complete Guide (Part 6 - Exit Codes)

Video Description

Master exit codes in Bash and understand how Linux indicates success or failure for commands. In this episode of LearnLinuxTV’s complete Bash Scripting course, you’ll learn how to check whether tasks completed successfully using exit codes. We’ll cover how exit statuses work, how to capture and use them in your scripts, and why they’re critical for automation and error handling. Perfect for beginners looking to build reliable and intelligent Bash scripts. *Support Learn Linux TV* Note: Commission may be earned for any and all links presented here. - Get your own cloud server with Akamai Connected Cloud ➜ https://learnlinux.link/akamai - Become a channel member here on YouTube ➜ https://learnlinux.link/join - Become a Patron on Patreon ➜ https://learnlinux.link/patron - Check out my latest book, Mastering Ubuntu Server 4th Edition ➜ http://ubuntuserverbook.com - Affiliate store for Linux compatible hardware/accessories ➜ https://learnlinux.link/amazon - Check out the Tiny Pilot KVM for your Homelab ➜ https://learnlinux.link/tinypilot *🕐 Time Codes* 00:00 - Intro 00:54 - What are "Exit Codes" in Linux? 01:31 - How does Bash perceive success and failure? 02:16 - Checking the $? variable to determine a command's Exit Code 03:35 - How to interpret the value of Exit Codes in Linux 04:15 - Why it can benefit us to utilize Exit Codes in our Bash Scripts 05:22 - An example Bash Script that utilizes Exit Codes 07:48 - More efficiently utilizing Exit Codes in our Bash Scripts 14:42 - An example script that illustrates why execution order is important in Bash 20:55 - How to manipulate the exit code of a task 23:35 - Another example of task order in Bash being very important *OTHER BASH SCRIPTING SERIES EPISODES* - Class 01 ➜ Introduction: https://linux.video/bash1 - Class 02 ➜ Hello World: https://linux.video/bash2 - Class 03 ➜ Variables: https://linux.video/bash3 - Class 04 ➜ Math Functions: https://linux.video/bash4 - Class 05 ➜ If Statements: https://linux.video/bash5 - Class 06 ➜ Exit Codes: https://linux.video/bash6 - Class 07 ➜ While Loops: https://linux.video/bash7 - Class 08 ➜ Universal Update Script: https://linux.video/bash8 - Class 09 ➜ For Loops: https://linux.video/bash9 - Class 10 ➜ Where To Store Your Scripts: https://linux.video/bash10 - Class 11 ➜ Data Streams: https://linux.video/bash11 - Class 12 ➜ Functions: https://linux.video/bash12 - Class 13 ➜ Case Statements: https://linux.video/bash13 - Class 14 ➜ Scheduling Jobs (Part 1): https://linux.video/bash14 - Class 15 ➜ Scheduling Jobs (Part 2): https://linux.video/bash15 - Class 16 ➜ Arguments: https://linux.video/bash16 - Class 17 ➜ Building a Backup Script: https://linux.video/bash17 - Class 18 ➜ Closing: https://linux.video/bash18*🎓 Full Linux Courses* • Linux Crash Course ➜ https://linux.video/cc • Netdata ➜ https://linux.video/netdata • tmux ➜ https://linux.video/tmux • vim ➜ https://linux.video/vim • Bash Scripting ➜ https://linux.video/bash • Proxmox VE ➜ https://linux.video/pve • Ansible (Paid) ➜ https://learnlinux.link/ansible • LPI Linux Essentials (Paid) ➜ https://learnlinux.link/linux-essentials *🌐 LEARN LINUX TV ON THE WEB* - Main site ➜ https://www.learnlinux.tv - Community ➜ https://community.learnlinux.tv Learn Linux TV provides technical content that will hopefully be helpful to you and teach you something new. However, this content is provided without any warranty (expressed or implied). Learn Linux TV is not responsible for any damages that may arise from any use of this content. The person viewing Learn Linux TV's content is expected to follow their best judgement and to make their best decisions while working with any related technology. Always make sure you have written permission before working with any infrastructure. Also, be sure that you're compliant with all company rules, change control procedures, and local laws. #linux #linuxtutorial #bash