You cannot pass an array, you can only pass its elements (i.e. the expanded array).

#! /bin/bashfunction f(){
    a=("[email protected]")((last_idx=${#a[@]}-1))
    b=${a[last_idx]}
    unset a[last_idx]for i in"${a[@]}";do
        echo "$i"done
    echo "b: $b"}

x=("one two""LAST")
b='even more'
 


f "${x[@]}""$b"
echo ===============
f "${x[*]}""$b"

The other possibility would be to pass the array by name:

#! /bin/bashfunction f(){
    name=$1[@]
    b=$2
    a=("${!name}")for i in"${a[@]}";do
        echo "$i"done
    echo "b: $b"}

x=("one two""LAST")
b='even more'

f x "$b"

http://stackoverflow.com/questions/16461656/bash-how-to-pass-array-as-an-argument-to-a-function