Changing file permission as root

Question

I want to change this file to be read only ( 444 ). At present it is:

-rwxrwxrwx 1 root root 10313267 Aug  8 14:28 ron-video-intro-24fps-november-05-2015.mp4

I've tried the commands unsuccessfully:

sudo chmod 444 ron-video-intro-24fps-november-05-2015.mp4
sudo chmod -X ron-video-intro-24fps-november-05-2015.mp4

What is the corret command?

I think you are correct. The file system type shown with df -T is showing fuseblk . Is this the reason? — Ron Piggott, Aug 09 '16 at 04:20
Possible duplicate of [Change folder permissions and ownership](http://askubuntu.com/questions/6723/change-folder-permissions-and-ownership) — heemayl, Aug 09 '16 at 04:30
Possible duplicate of [How do file permissions work?](http://askubuntu.com/questions/83/how-do-file-permissions-work) — Anwar, Aug 09 '16 at 06:50

score 3 · Accepted Answer · edited Aug 09 '16 at 04:29

3

The first command is the correct one: sudo chmod 444 ron-video-intro-24fps-november-05-2015.mp4

The second command will only remove the executable bit and the file will end up with permission 666.

edited Aug 09 '16 at 04:29

heemayl

answered Aug 09 '16 at 04:23

sмurf

1 Answers1