Add users from IAM into the machine

import_iam_users.sh

#!/bin/bash
set +e

aws iam list-users --query "Users[].[UserName]" --output text | \
    while read User; do
        UserName="$User"
        # sanitize username from IAM
        UserName=${UserName//+([@.])/""}
        echo "username => $UserName"
        if id -u "$UserName" >/dev/null 2>&1; then
            echo "$UserName exists"
        else
            /usr/sbin/adduser --shell /bin/bash --disabled-password --gecos "" $UserName
            echo "${UserName} ALL=(ALL) NOPASSWD:ALL" > "/etc/sudoers.d/${UserFileName}"
        fi
    done