How to create ubuntu sudoer user using command line

team@Lenovo-G470:~$
team@Lenovo-G470:~$ sudo adduser maswachid
Adding user `maswachid' ...
Adding new group `maswachid' (1004) ...
Adding new user `maswachid' (1003) with group `maswachid' ...
Creating home directory `/home/maswachid' ...
Copying files from `/etc/skel' ...
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
Changing the user information for maswachid
Enter the new value, or press ENTER for the default
        Full Name []: mas wachid
        Room Number []: 1
        Work Phone []: 0822
        Home Phone []: 0856
        Other []: indonesia
Is the information correct? [Y/n] Y
team@Lenovo-G470:~$

team@Lenovo-G470:~$
team@Lenovo-G470:~$ sudo usermod -aG sudo maswachid
team@Lenovo-G470:~$
team@Lenovo-G470:~$ groups maswachid
wachid : maswachid sudo
team@Lenovo-G470:~$