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use awk for simple cut
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Sun, 07 Aug 2022 13:57:28 +0100
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#!/bin/bash
# Use awk to do cut -d whitespace
declare ff=("$@")
join_array() { local IFS=\$; echo "$*"; }
s=$(join_array "${ff[@]}")
awk '{print '\$${s/\$/,\$}\}