illumos-port-bash/examples/functions/array-to-string

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Bash

#! /bin/bash
# Format: array_to_string vname_of_array vname_of_string separator
array_to_string()
{
(( ($# < 2) || ($# > 3) )) && {
"$FUNCNAME: usage: $FUNCNAME arrayname stringname [separator]"
return 2
}
local array=$1 string=$2
((3==$#)) && [[ $3 = ? ]] && local IFS="${3}${IFS}"
eval $string="\"\${$array[*]}\""
return 0
}