bash arrays, i.e. the closest thing to a map/hash

array_tester.sh

#!/bin/bash

declare -A weapons=(
  ['Straight Sword']=75
  ['Tainted Dagger']=54
  ['Imperial Sword']=90
  ['Edged Shuriken']=25
)

# declare -A MYMAP=( [foo]=bar [baz]=quux [corge]=grault ) # Initialise all at once
# echo ${MYMAP[foo]}

echo "Keys: ${!weapons[@]}"  # Print all keys - quoted, but quotes removed by echo
echo ""
echo "Looping through keys: "
for K in "${!weapons[@]}"; do echo $K; done # Loop through all keys in an associative array
echo ""
# Read entire array
echo "Array Values: ${weapons[@]}"
echo ""
echo "Looping through values:"
for V in "${weapons[@]}"; do echo $V; done # Loop through all values in an associative array
echo ""
echo "Looping through keys and values: "
for K in "${!weapons[@]}"; do echo $K --- ${weapons[$K]}; done # Looping through keys and values in an associative array
echo ""

print_array(){
  echo "Printing associative array passed to function as argument: "
  local -n array=${1}
  for i in "${!array[@]}"; do 
    printf "%s\t%d\n" "${i}" "${array[${i}]}"
  done  
}

echo ""
print_array weapons

echo ""
# Check if values exist in Associative Array
key_to_check_for='Edged Shuriken'
if [ "${weapons[${key_to_check_for}]}" ]; then 
  echo "Key '${key_to_check_for}' exists"
else
  echo "Key '${key_to_check_for}' does not exist"
fi


# function to start java service with port name target-path
# function to start java service with port name and target-path in associative array
# start_all -> start_single arguments_array