[mmh0000]

There are many foot-guns to be found in bash scripting.

I highly recommend the Wooledge wiki for any and all bash knowledge, it points every place you can go wrong, especially when using advanced features.

https://mywiki.wooledge.org/FullBashGuide

http://mywiki.wooledge.org/BashFAQ

[mcc1ane]

Complementary - https://github.com/anordal/shellharden/blob/master/how_to_do...