[Shell]join string array

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#!/bin/bash
foo=('foo bar' 'foo baz' 'bar baz')
bar=$(printf ",%s" "${foo[@]}")
bar=${bar:1}

echo $bar

https://stackoverflow.com/questions/1527049/how-can-i-join-elements-of-an-array-in-bash

How can I join elements of an array in Bash?

 

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