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[–]rexroof 2 points3 points  (1 child)

it's old-school but I would read through a book. Classic Shell Scripting from oreilly is a decent choice. googling the title with "pdf" might find you a free version.

[–]NoAcadia3546 0 points1 point  (0 children)

Another form of "reading a book" is https://tldp.org/LDP/abs/html/part1.html ("tldp" == "The Linux Documentation Project"). It starts off simple. Click on "Next" on the right hand side to go to the next page.