우분투에 새로운 HDD 설치시 read/write 가 안되는 문제 발생시

http://unix.stackexchange.com/questions/126213/external-hard-drive-permissions-ext4/

 

 

$ sudo chgrp -R sys /mnt/data/dir $ sudo chmod -R g+s /mnt/data/dir $ sudo setfacl -R -m g:sys:rwx /mnt/data/dir $ sudo setfacl -R -d -m g:sys:rwx /mnt/data/dir

$ sudo adduser user sys 

you user be able to read/write any file on /dir.