Multiple "aws s3 ls" to fetch buckets info and parse it

aws_load_bucket_info.sh

#!/bin/bash

# ---------- Help
# https://stackoverflow.com/a/51911626/4906586
__help="
Usage:
    ./load.sh --awsBuckets=pouet --awsProfile=MyProfile --parser=../haha

Options:
    -b, --awsBuckets=<buckets>          list of buckets to load from AWS. If 
    -u, --awsProfile=                   AWS CLI profile to use to load S3 data. Require having
                                        AWS CLI installed and configured. If awsBuckets is defined
                                        while awsProfile is not defined, default AWS CLI is used 
                                        instead
    -p, --parser <parserFile>           Python parse file to read S3 buckets info. Default is
                                        parse.py
"

# ---------- Load arguments
# https://stackoverflow.com/a/33826763/4906586
while [[ "$#" -gt 0 ]]; do case $1 in
    -b|--awsBuckets) 
        # bucketStr="$2"
        awsBuckets="$2@"; 
        shift;;
    -u|--awsProfile)
        awsProfile="$2";
        shift;;
    -p|--parser)
        parserFile="$2"
        shift;;
esac; shift;done

echo "aws $awsBuckets $awsProfile"
echo "parser $parserFile"

# no arguments were provided
# https://stackoverflow.com/a/13864829/4906586
if [ -z ${awsBuckets+x} ] && [ -z ${awsProfile+x} ] && [ -z ${parse+x} ]
then
    echo "$__help"
    exit 0
fi

# # ---------- AWS Load

# https://www.shellhacks.com/yes-no-bash-script-prompt-confirmation/
read -p "Script is going to \"aws s3 ls\" ${awsBuckets[*]}: Continue? (y/n)" -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    echo Script cancelled by user
    echo
    exit 1
fi

for bucketName in ${awsBuckets[*]}
do
    # check if an old file exists
    if [ -f "$bucketName" ]; then
        printf "%s file already exists. Deleting...\n" $bucketName
        rm $bucketName
    fi

    # Loading
    printf "Loading bucket: %s\n" $bucketName
    if [ -z ${awsProfile+x} ]; then
        aws s3 ls $bucketName --recursive >> $bucketName
    else
        aws s3 ls $bucketName --recursive --profile $awsProfile >> $bucketName
    fi
done

# ---------- Parsing
# If parse.py is present
parseFile="parse.py"
if [ -f "$parserFile" ]
then
    python3 $parserFile ${awsBuckets[*]}
else
    printf "%s not found. Parsing skipped..." $parseFile
fi