How to overwrite hardcoded array values in my Bash source file-CodePudding

I set an array with static values in the code of my script. It basically handles strings and I want to remove some of theses values.

Somehow I didn't find any way to overwrite values of the array in the code of my script.

I can remove values but just in the lifetime of my script. When the script ends, my array is reset to the hardcoded values.

How can I do this?

CodePudding user response：

You can persist, save a modified array state for next runs of your script this way:

#!/usr/bin/env bash

default_fruits=( 'apricot' 'banana' 'cocoa' )

# Try to restore saved fruits array from saved_fruits.sh
if ! . saved_fruits.sh
# if not available, use the default fruits
then fruits=( "${default_fruits[@]}" )
fi

# Print fruits array that will be different after first run
printf 'Fruits:\n'
printf '%s\n' "${fruits[@]}"

# Change the fruits array at run-time

fruits[1]='blueberry'

# Save the array to recover it next time
declare -p fruits >saved_fruits.sh

First time running this script:

apricot
banana
cocoa

Subsequent runs will output:

apricot
blueberry
cocoa