!/bin/bash
while :
do
read -r INPUT_STRING
case $INPUT_STRING in
        test)
               echo "Please enter id no : "
                                read -r input_variable
                                if [[ ${#input_variable} -ne "7" ]]
                                then
                                echo "Please check the id no given"
                                exit 1
                                fi
                                HOST=xxx
                                USER=xxx
                                PASSWORD=xxx
                                ^Iftp -inv $HOST <<- EOF
                                user $USER $PASSWORD
                                cd /work/path//$input_variable/to/destination/
                                mput x.csv

^IEOF
;;
esac
done

ftp -inv $HOST <<-EOF
            user $USER $PASSWORD
            cd /work/test//$input_variable/path/to destination/
            mput x.csv
    EOF