bashtest

while getopts s:r:l:p:a:i: option
do
    case "${option}"
    in
        s) SUB=${OPTARG};;
        r) RESOURCEGROUP=${OPTARG};;
        l) LOCATION=${OPTARG};;
        a) ADMINUSERNAME=${OPTARG};;
        p) PASSWORD=${OPTARG};;
        i) IMAGE=${OPTARG};;
    esac
done