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My college has a server set up for students and we all have a folder for our persona stuff on it (access via ssh). So I explored it a bit and found out I can access most of the folders of other students and view its contents such as text files , folders etc but of course i cant change them without the admin permission .

Then I found some folders that cant be accessed. WHen i type "cd foldername" I get a message permission denied. So now I'm wondering can I block other people from accessing my folder on that server and how? Using console (Ubuntu 15.4) ?

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    You could remove read permission for others on folders that you own with chmod. There's a good answer by @David Foerster here: askubuntu.com/questions/710618/… that explains the issue. – Elder Geek Feb 6 '16 at 14:41
  • Changing permissions would require admin privileges, and if you aren't an admin, then no, you can't change them. – mikewhatever Feb 6 '16 at 14:50
  • @mikewhatever Well i think i have admin privileges over my own folder – David Marjanovic Feb 8 '16 at 9:29
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See if you can chmod one of your own files. Something like chmod 600 myfile.txt If you can do that you have control of your files. The 6 is your permission lvl the 0 for others.

Now go check from someone else if they can see your file. or you could su <otheruser> and try to see/interact with the file.

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