Bash 함수에서 배열 반환

#!/bin/bash

# Example of how to return an array from a function
# using pass-by-reference.

# Halt on error, no globbing, no undeclared vars
set -efu

function getFnames
####################################################
# Load all filenames into an array. 
# Arguments:
#    $1 = name of return array (must be global)
#    $2 = first path for 'find' command to search
#    ...  other paths for 'find' to search
#
{
   # store the name of the global array for return.
   local h_rtnArr=$1
   # discard first argument in argv
   shift

   # mapfile does heavy lifting.  See: help mapfile
   mapfile $h_rtnArr < <(find $@ -type f)

   # TODO: return error code
}

# Global array
declare -a FnameArr

# Pass FnameArr by reference
getFnames FnameArr /boot

# List results to stdout
arrSz=${#FnameArr[@]}
for (( ndx=0; ndx < $arrSz; ++ndx )); do
   echo -n "${ndx}: ${FnameArr[$ndx]}"
done