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    I really appreciated TLDP in the early 2000s. I learned Linux reading their books and howtos, and I doubt I was the only one.

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      For some reason I have to look for something with the test syntax or the number eval syntax about once a month, despite using a lot more bash than I want to, so this is a very frequently visited link…

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        https://mywiki.wooledge.org/BashFAQ is another handy resource for this, in case you didn’t already know. See https://mywiki.wooledge.org/BashFAQ/031 (for test) and https://mywiki.wooledge.org/BashFAQ/048 (for eval).

        Also, https://www.shellcheck.net/

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        This document is herewith granted to the Public Domain. No copyright!

        Wow, didn’t expect that. Wonder if someone has tried to update this since 2014.

        I have a few resources for bash scripting, style guide, cheatsheet, etc here

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          Don’t but if you insist, read this …

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            absolutely an incredible guide that I’ve found incredibly useful over the years