1.Add user to the wheel group
[15:26 root@server /home/cipher]# usermod -aG wheel cipher
2.Check the commands the user can execute
[15:26 cipher@server ~]$ sudo -l Matching Defaults entries for cipher on server: !visiblepw, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin User cipher may run the following commands on server: (ALL) ALL
3.Check sudo access
[15:28 cipher@server ~]$ sudo systemctl status sshd ● sshd.service - OpenSSH server daemon Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled) Active: active (running) since Fri 2018-02-16 14:47:00 IST; 42min ago