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#! /bin/bash usage() { echo "usage $0 -n <installer_type> -i <installer_ip>" } while getopts ":n:i:" optchar; do case "${optchar}" in n) export INSTALLER_TYPE=${OPTARG};; i) export INSTALLER_IP=${OPTARG};; *) echo "Incorrect usage" usage ;; esac done ./fetch_os_creds.sh -d opnfv-creds.sh