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Right now, I know that I can change persmissions for example with :

sudo chmod 550 directory

I wonder how I can check the actual folder permission.

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Do you specifically need to see the permissions in octal (like 550), or is any format that shows them unambiguously sufficient? (If you don't need them in octal, then Radu Rădeanu's way is the normal way to do this.) – Eliah Kagan Aug 14 '13 at 9:54
is there a way to see them octal ? have you heard about that? right now it displays : lrwxrwxrwx , so it means : read and write for everybody, correct? – Private Aug 14 '13 at 9:59
Yes, there are a few techniques for this. See How can I get octal file permissions from command line? – Eliah Kagan Aug 14 '13 at 10:00
even more stupid :D haha. thank you very much. I suddenly liked this way much more :) – Private Aug 14 '13 at 10:01
up vote 23 down vote accepted

You can use the following command:

ls -l directory


stat directory

or, if you want to see only the permissions in numeric (octal) format:

stat -c %a directory
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