tldp is notoriously full of bad advice, especially when it comes to shell scripting. From my time on #bash back when freenode was a thing, this was the superior

tldp is notoriously full of bad advice, especially when it comes to shell scripting. From my time on #bash back when freenode was a thing, this was the superior resource: https://mywiki.wooledge.org/BashGuide https://mywiki.wooledge.org/BashGuide