Bash array expansion using variable indirection expansion

Question

I am trying to expand all values in an array I get to through indirect expansion:

> my_array=(coconut banana)
> echo \"${my_array[@]}\" 
coconut banana         


        

Answer 1

This should work

my_array_name='my_array[@]'
echo "${!my_array_name}"

After comment : you have to create a string with the name of the array and '[@]', another example

my_array_name="$1"'[@]'
echo "${!my_array_name}"

After comment : test in a function

display_elem() {
  local arrname
  arrname="$1[@]"
  printf "%s\n" "${!arrname}"
}

display_elem my_array

Answer 2

The problem is my_array_name=my_array. You need to retrieve all values of my_array. Try this instead:

 my_array_name=${my_array[@]}
 echo "${my_array_name[@]}"