How do I change the file permission of a file to 700 ?
I am using Ubuntu Live CD. I tried sudo chmod 777 abc
It does not change the permission and still shows:
-rw-r--r-- 1 ubuntu ubuntu 18 2012-01-14 03:02 abc
Using Latest Ubuntu 11+
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2 Answers
It's hard to tell without knowing where the file is, but, making an educated guess, I'd say the file might be on a read only file system. If that's the case, chmod won't work.
It would also not work of the file is on a non-linux file system like FAT or NTFS. Linux permissions only work on Linux file systems.
answered Jan 14, 2012 at 7:10
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The file is on d: drive. Not on CD of course !! :) I can create files on that drive by can not change file permissions. Jan 14, 2012 at 9:00
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@shantanuo The output of
mountsays if the drive is mounted rw or ro (read-write/read-only).– lumbricJan 14, 2012 at 12:34
Are you trying to change file permissions on files in LiveCD? You can't because CD is mounted as read-only.
