I have three users jack, hugo and kate (standard users).
jack's group membership is: jack , eng_g
hugo's group membership is: hugo , eng_g
kate's group membership is: kate
jack and hugo both belong to secondary group, eng_g.
I created an "staff_eng" folder as admin in /home and changed its group.
ls -l for this folder is:
d rwxrwxr-x root eng_g staff_eng
Now, as jack, I went to “staff_eng” folder (cd /home/staff_eng) and created a file "kate_file".
ls -l for this file is:
-rwxrw-r-x jack jack kate_file
(I don't know why group name is jack but not eng_g).
I changed file’s ownership to kate. Now, ls -l for this file is:
-rwxrw-r-x kate jack kate_file
Now, kate is the owner of this file, but kate does not belong to eng_g group.
As user kate, I can read and change file "kate_file", because I can access to “staff_eng” directory as indicated by others permission. But as an owner, I can't detele "kate_file". Why? Is it because kate doesn’t belong to eng_g group? What about ownership of file? Kate owns file but can’t remove it?!
please explain this situation clearly
