[SOLVED] Bash read dictionary file

Issue

I have a dictionary file, call it 1.txt with the following content:

app1=1

app2=10

app3=2

app1=8

and so on.

From a bash script I would like to:

1. call 1.txt
2. read its content line by line
3. get key into variable A
4. get value into variable B

I tried:

var1=${for KEY in "${!dict[@]}"; do echo $KEY; done

var2=${for KEY in "${!dict[@]}"; do echo $dict[$KEY]}; done

which works just fine but I do not know how to wrap this into a bash function that calls the dictionary set on another file.

Would you please point out on this?

Solution

Probably this is what you want.

#!/bin/bash

declare -A dict

# Read the file into associative array "dict"
read_into_dict () {
    while read -r line; do
        [[ $line = *=* ]] && dict[${line%%=*}]=${line#*=}
    done < "$1"
}

read_into_dict 1.txt

# Print out the dict
for key in "${!dict[@]}"; do
    printf '%s=%s\n' "$key" "${dict[$key]}"
done

Answered By - M. Nejat Aydin

Answer Checked By - Candace Johnson (WPSolving Volunteer)