sudo 명령어로 root 권한 취득하려면

커널 배포판	4.4.0-87-generic
커널 버전	#110-Ubuntu SMP Tue Jul 18 12:55:35 UTC 2017
운영체제	GNU/Linux

 
root@master:/$ visudo -f /etc/sudoers
 

* sudoers 파일은 일반적인 vi 명령어와 달리 visudo 명령어로 진행합니다.

#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults        env_reset
Defaults        mail_badpass
Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/s$
 
# Host alias specification
 
# User alias specification
 
# Cmnd alias specification
 
# User privilege specification
root    ALL=(ALL:ALL) ALL
 
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
 
# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL
 
# See sudoers(5) for more information on "#include" directives:
 
#includedir /etc/sudoers.d

* 추가하고자 하는 계정을 위의 "root    ALL=(ALL:ALL) ALL" 이하 부분에 작성합니다.

#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults        env_reset
Defaults        mail_badpass
Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/s$
 
# Host alias specification
 
# User alias specification
 
# Cmnd alias specification
 
# User privilege specification
root    ALL=(ALL:ALL) ALL
test    ALL=(ALL:ALL) ALL
 
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
 
# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL
 
# See sudoers(5) for more information on "#include" directives:
 
#includedir /etc/sudoers.d

* 추가하려는 계정은 test 이며 추가 후의 모습입니다.