local

Declare local variables and give them attributes. More information: https://www.gnu.org/software/bash/manual/bash.html#Bash-Builtins.

local variable="value"

local -i variable="value"

local variable=(item_a item_b item_c)

local -A variable=([key_a]=item_a [key_b]=item_b [key_c]=item_c)

local -r variable="value"