This one time, at band camp, Phillipus Gunawan wrote:
>And is this a save method? considering that id 711
>will allow other group and user to execute any file in
>the home folder.

This isn't true, a +x setting on a directory means that the class of user
will be able to change into that directory.

For files:
  r = readable
  w = writable
  x = executable

For directories:
  r = can get a directory listing
  w = can create/delete files in this directory
  x = can change into this directory

So, 711 for a directory allows the user who owns the directory to get a list
of files, create and delete them, and be in that directory; and allows other
users in their group and all users to be in that directory.

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