How do you append to an indirect parameter expansion of an array in BASH?

Question

I know you can create an indirect parameter expansion to an array like so:

var1=\"target\"
var2=\"arrayname\"
targetarrayname=( \"one\" \"two\" \"three\" )
b         


        

Answer 1

The declare command takes assignments as arguments, which are expanded before the declaration. Thus, you can introduce any level of indirection when declaring variables. The following works in Bash 3.2.

$ array=myarray
$ declare -a "$array+=(\"element 1\")"
$ echo ${myarray[0]}
element 1