How do you tell whether or not a task completed successfully? Usually, an error message is a sure sign that something went wrong. But when it comes to Linux, you won't always have that to rely on. In this video, you'll learn all about exit codes, which is how you determine whether or not a task in Linux is successful or if it failed.

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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

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