How to create www user groups and users on pure linux systems

I believe many people simply use pure linux systems without installing any integrated environment. Here is how to create www user groups and users.

//Let's check first to see if there are www users

id www

id: www: no such user

//Add www user groups

groupadd www

groupadd: group 'www' already exists

//Start adding www users

# useradd -g www -s /sbin/nologin www

//Check again to see if there is already a www

# id www

uid=1001(www) gid=1000(www) group =1000(www)

Give www users access to the required directory

chown -R www.www directory path/