Remove duplicate elements from array using bash script – Code Example

Akash Mittal

4 months ago

In this article we will provide you the bash script code to remove duplicate elements from array. In this approach, the order of list items may change.

Code Example –

#!/bin/bash

remove_array_duplicates() {
    declare -A tmp_array

    for i in "$@"; do
        [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1
    done

    printf '%s\n' "${!tmp_array[@]}"
}

arr=(we love nature we love animals)

remove_array_duplicates "${arr[@]}"

# Output:
# nature
# love
# we
# animals

Inspired from Dylan Araps

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