To create a domain user account:
dsadd user UserDN [-samid SAMName] [-upn UPN] [-fn FirstName] [-ln LastName] [-display DisplayName] [-pwd {Password|*}]

dsadd user "cn=test user,cn=users,dc=contoso,dc=msft" -samid testuser -upn testuser@contoso.msft -fn test -ln user -display "test user" -pwd Pa$$w0rd

net user [username [password | *] [options]] [/domain] username {password | *} /add [options] [/domain] username [/delete] [/domain]

To create a computer account:
dsadd computer "cn=Sales3,ou=sales,dc=contoso,dc=msft" -loc downtown

To modify user and computer account properties:
dsmod computer "cn=sales2,ou=sales,dc=contoso,dc=msft" -loc Downtown -desc Workstation

To find users and computers in Active Directory that match the specified search criteria:
dsquery user OU=Sales,DC=contoso,DC=msft -o upn