Bash: How do I combine two arrays into a third array?

Question

I have two arrays: array1 and array2:

array1=( a b c )
array2=( 1 2 3 )

How do I make a third array, array3:

array3=( a b c 1 2 3 )

This question is different from Combine arrays in the beginning of a for-loop (Bash) because this deals exclusively with combining arrays, not whether such a statement is legal within a for loop. Thus, it is more general.

Answer 1

From The Advanced Bash Scripting Guide example 27-10, with a correction:

declare -a array1=( zero1 one1 two1 )
declare -a array2=( [0]=zero2 [2]=two2 [3]=three2 )
dest=( "${array1[@]}" "${array2[@]}" )

Thus, for my case, it's:

array3=( "${array1[@]}" "${array2[@]}" )