Question

2

How to make txt, csv and pem files read and writable only by root with sudo previliges?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 779 / 2 Years ago, thu, september 1, 2022, 12:01:02

I have some files inside a folder with various formats like .txt, .pem, .csv and .json.

I want only sudo/root to be able access them. I have done

chmod 700

and

chmod 600

on each of those files. But, I can still print the private key of my .pem files by doing cat on terminal without sudo privileges and open .json files from the file system in "gedit".

What has gone wrong? How do I not let anyone access the contents of those files?

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3 Years ago

answered 2 Years ago ardingiba · Accepted Answer

Suppose your file is named example.txt. Then:

$ sudo chown root: example.txt

$ sudo chmod o-rwx example.txt

should do the job.

If you want an entire directory exampledir to be accessible only to root:

$ sudo chown -R root: exampledir

$ sudo chmod -R o-rwx exampledir