Parse Command Line Positional Arguments and Flags with Bash

Pubblicato il: 14 marzo 2023
sul canale di: Nick Janetakis

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We'll cover short flags, long flags, flags with and without values and required positional args.

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REFERENCE LINKS
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► https://nickjanetakis.com/blog/parse-...

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THE TOOLS I USE / GEAR
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FOLLOW ME ELSEWHERE
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TIMESTAMPS
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0:00 -- Intro
0:56 -- Displaying a usage message
2:44 -- Seeing how $@ works
3:19 -- Setting up variables for our inputs
4:26 -- A while loop and reducing the args until it's 0
6:23 -- Handling the help menu
7:41 -- Handling the interests (required flag)
9:11 -- Understanding how shift works
10:53 -- Handling being cool or not (optional flag)
12:05 -- Handling positional arguments
13:32 -- Exiting out if there's too many arguments
14:08 -- Validating our inputs
15:45 -- Performing your script's main purpose
16:12 -- Why I explicitly return 0 in the main function
16:52 -- For basic parsing you can skip the loop and read $1, $2, etc.

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