linux - User input is not promted in CentOS7 using systemctl or service command -

am trying stop system service using systemctl or service command. command follows

systemctl start service_name or service service_name start 

in stop method asking user enter password not display on console(suspecting ran in background). stop method follows

stop() { read -s -p "please provide password stop service" passwd } 

the same ran in centos 6 using service command, displayed on console , entered input. can please suggest me missed here prompt or how can prompt user input using systemctl.

finally, come know how read password user in centos 7. command.

pwd=`systemd-ask-password --no-tty "please enter admin password "` 

systemd-ask-password — query user system password