I am having trouble with file permissions. There are tons of websites and other sources regarding this. But none are addressing my issue. When I set a permission on a folder I have with

chmod 660 [name of folder]

The system will restrict outside PCs from having access to the folder. But, if I use

chmod 770 [name of folder]

I can gain access to the folder, download it and delete data from it. Is there something I do not get? I thought that with a "0" in the last digit of the three numbers that it will not let other users or groups alter and gain access to folder. What am I not understanding?

  • Is the user you're logging into with FTP the owner of the file, or in the same group as the file owner? – Aurora0001 Jul 12 '17 at 18:02
  • I am assuming logging in as the other. When I initiate FTP I enter IP address, username, and password. If I am understanding how this operates correctly, if I FTP into my pi, it is considered other user not in the group. Or am I completely wrong on this? – CowardlyDoomsday Jul 12 '17 at 21:11
  • If you turn off "execute" permissions on a directory (not folder, unless you are using Windows, which works differently) you DO NOT have permission to view the contents. – Milliways Jul 13 '17 at 0:08
  • So let me ask another question. All documentation I've read states "other" as everyone else who is not in the group or the owner of file. When I enter user name and password of my user on the RPi into my PC FTP, is that considered the owner or other? I guess this is the part I'm lost at. – CowardlyDoomsday Jul 13 '17 at 16:02

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