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There are two user A & B. sharing same server. A has created a directory with permission 700 and both user and group are same i.e. user A

e.g.

drwx --- --- A A temp_dir/

Now user B has permission to access A's files. What B did is, he moved this "temp_dir/" to his home directory.

Now this moved directory has the same permission before i.e. 700 with user and group is A.
When B is trying to access the files from this directory he is not able to do it.
He is not able to change the permission neither he has sudo/root user permission.

How B can access this directory?

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  • "B has permission to access A's files" does that imply they are in the same group? Commented Mar 19, 2015 at 6:41

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How B can access this directory?

Well, the directory belongs to A, and A did not grant any permissions on this directory to B. Therefore B cannot access the directory. It's that simple.

If A (or root) wants to grant permissions to B then they should do so with chmod (or chown if root does it).

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  • Actually B has the permission to access the parent directory of "remp_dir/" that's why he is able to move this directory to his home directory. Commented Mar 19, 2015 at 6:18
  • Correct, that's why he is able to move it. But that does not change the fact that he still does not have any permissions to it after moving it. Commented Mar 19, 2015 at 6:20
  • Yes, but if he moved the directory from A's home directory, now it is a part of B's directory, B should have control over it, isn't it? Commented Mar 19, 2015 at 6:22
  • Why should that be? You said yourself, the permissions of that directory are rwx------ and the owner is A. So A is the only user (other than root, of course) who can access the directory. Commented Mar 19, 2015 at 6:24

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