Setgid bit on directories (cont) $ chmod g+s . ; ; ls -la . drwxr-s--- 2 bri friends 4096 Apr 19 4:43 . -rw-r----- 1 bri bri 0 Apr 19 4:43 file # touch newfile ; ls -la drwxr-s--- 2 bri friends 4096 Apr 19 4:43 . -rw-r----- 1 bri bri 0 Apr 19 4:43 file -rw-r----- 1 bri friends 0 Apr 19 4:43 newfile