SHELL

angular create a service

>>> ng generate service service_name
or
>>> ng generate service /folder-name/service-name

make service in angular 8

For Creating Service you have type command like below
ng generate service service-name
or
ng g s service-name

And if you want to make service into folder
ng generate service /folder-name/service-name
or
ng g s /folder-name/service-name

angular new service

ng g s serviceName

add service in angular

ng generate service service_name

Create a service - angular

ng g s services/data --spec=false

/*
Where: 

ng = Angular CLI 
g = generate
s = service 

services/data = folderWhereTheServiceWillBeCreated/serviceName

--spec=false: Do not create the testing file for the service

*/