After downloading default user accessKeys.csv file from AWS console you can setup default profile with following bash function

aws.setup-credentials.sh

#!/bin/bash -eu

aws.setup-credentials(){
    local FILE="${1:--/dev/null}"
    local file_paths_to_check=(
        "$FILE"
        "./accessKeys.csv"
        "$HOME/accessKeys.csv"
        "$HOME/Downloads/accessKeys.csv"
    )
    local error=0
    for FILE in "${file_paths_to_check[@]}"; do
        if [[ -f "$FILE" ]]; then break; fi
    done

    if [[ ! -f "$FILE" ]]; then
        echo "Please pass in a valid path to accessKeys.csv";
        exit 1
    fi

    echo "Reading from $FILE";
    aws_access_key_id=$(     awk -F , 'NR==2{gsub("[\r\n]",""); printf $1}' <$FILE)
    aws_secret_access_key=$( awk -F , 'NR==2{gsub("[\r\n]",""); printf $2}' <$FILE)
    if [[ ${#aws_access_key_id}     -ne 20 ]]; then echo "Could not find a valid aws_access_key_id";     error+=2; fi
    if [[ ${#aws_secret_access_key} -ne 40 ]]; then echo "Could not find a valid aws_secret_access_key"; error+=4; fi
    if [[ $error -gt 0 ]]; then
        exit $error
    fi
    aws configure set aws_access_key_id     "${aws_access_key_id}"
    aws configure set aws_secret_access_key "${aws_secret_access_key}"
}

aws.setup-credentials "${@:-}"