How to add multiple values ​​(array) to a variable?

Question

bash

export mac=("mac1" "mac2")
echo $mac only displays 1.
What's wrong?
Thanks

Answer 1

1. Spaces first:
mac=( "mac1" "mac2" )
2. Second,
echo ${mac[0]}
echo ${mac[1]}
3. Third,
export is completely pointless in this case, so as an array cannot be sent to environment variables.