adduser 새유저에 sudo 권한 주기

새유저 : skshin 인 경우,admin 그룹에 추가하여 sudo 권한을 준다.

root@fgs:~# cat /etc/group |grep sudo

sudo:x:27:

root@fgs:~# sudo usermod -a -G admin skshin

root@fgs:~# cat /etc/group |grep skshin

admin:x:120:krkim,skshin

skshin:x:1001:

root@fgs:~# cat /etc/group |grep krkim

adm:x:4:krkim

dialout:x:20:krkim

cdrom:x:24:krkim

plugdev:x:46:krkim

sambashare:x:114:krkim

krkim:x:1000:

lpadmin:x:119:krkim

admin:x:120:krkim,skshin

root@fgs:~# sudo usermod -a -G sambashare skshin

root@fgs:~# sudo usermod -a -G cdrom skshin

root@fgs:~# vi /etc/sudoers