parsing utpime output into an array with named fields

#!/usr/bin/env bash
# tivasyk <[email protected]>

# Dump uptime command output
# Format: 09:31:12 up 4 days, 19:26,  2 users,  load average: 0.19, 0.21, 0.15
DUMP_ARRAY=()
IFS=", " read -r -a DUMP_ARRAY <<< "$(uptime)"

# Report on read tokens
printf "Read %s tokens:\n" "${#DUMP_ARRAY[@]}"
for ((i=0; i<"${#DUMP_ARRAY[@]}"; i++)); do
    printf "  Array[%s]: %s\n" "${i}" "${DUMP_ARRAY[i]}"
done

# Store useful data in another array
NAME_ARRAY=()   # This will store variable names
DATA_ARRAY=()   # This will store variable data

# Store UPTIME_DAYS
NAME_ARRAY+=("UPTIME_DAYS")
DATA_ARRAY+=("${DUMP_ARRAY[2]}")

# Store UPTIME_TIME
NAME_ARRAY+=("UPTIME_TIME")
DATA_ARRAY+=("${DUMP_ARRAY[4]}")

# Store LOGGED_USERS
NAME_ARRAY+=("LOGGED_USERS")
DATA_ARRAY+=("${DUMP_ARRAY[5]}")

# Store CPU_LOAD
NAME_ARRAY+=("CPU_LOAD_1M")
DATA_ARRAY+=("${DUMP_ARRAY[9]}")
NAME_ARRAY+=("CPU_LOAD_5M")
DATA_ARRAY+=("${DUMP_ARRAY[10]}")
NAME_ARRAY+=("CPU_LOAD_15M")
DATA_ARRAY+=("${DUMP_ARRAY[11]}")

# List saved data in a loop
printf "Saved variables:\n"
for ((i=0; i<"${#NAME_ARRAY[@]}"; i++)); do
    printf "  Variable %s: %s=%s\n" "${i}" "${NAME_ARRAY[${i}]}" "${DATA_ARRAY[${i}]}"
done