Sudo 옵션의 차이점 질문

[size=150:17tzmru1]안녕하세요.

sudo 명령어에 대해서 질문 하나 올립니다.

[color=#0040FF:17tzmru1]sudo -s[/color:17tzmru1] 와 [color=#0040BF:17tzmru1]sudo -i[/color:17tzmru1] 와의 차이점을 알고 싶습니다.
두 명령다 whoami로 보면 계정이 root인데

막상 각 상태에서 디렉터리 파일을 보면 전혀 다른 것들이 들어가 있습니다.
차이점이 뭔지 알고 싶습니다.

아래는 두 경우의 캡쳐 화면 입니다.[/size:17tzmru1]

[attachment=0:17tzmru1]sudo.jpg[/attachment:17tzmru1]

여기를 참고 바랍니다.

http://askubuntu.com/questions/70534/wh ... -i-sudo-su

그리고,
pwd로 디렉토리도 한번 확인해보시고요.

[code:26uw9rb1] -i, --login
Run the shell specified by the target user’s password data‐
base entry as a login shell. This means that login-specific
resource files such as .profile or .login will be read by the
shell. If a command is specified, it is passed to the shell
for execution via the shell’s -c option. If no command is
specified, an interactive shell is executed. sudo attempts
to change to that user’s home directory before running the
shell. The command is run with an environment similar to the
one a user would receive at log in. The Command Environment
section in the sudoers(5) manual documents how the -i option
affects the environment in which a command is run when the
sudoers policy is in use.
[/code:26uw9rb1]

[code:26uw9rb1] -s, --shell
Run the shell specified by the SHELL environment variable if
it is set or the shell specified by the invoking user’s pass‐
word database entry. If a command is specified, it is passed
to the shell for execution via the shell’s -c option. If no
command is specified, an interactive shell is executed.
[/code:26uw9rb1]