What I want is to take a directory, dirname/subdirname/filename and return dirname/subdirname/.
This is in Linux with bash.
I did some googling and found nothing because I can't express my ideas to the search engine properly.
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`result="${dir%/*}"` or, slower / less-efficiently, `result=$(dirname "$dir")` – Charles Duffy Feb 22 '23 at 18:10
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Per @CharlesDuffy comment https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html – j_b Feb 22 '23 at 18:12