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I have a backup drive, and I only want the root account to have access to any files on the backup. The drive mount point is owned by root and has 700 permissions. How can I make sure that all files in the drive are also 700 permissions? I assume that 700 permissions on the drive mount point is sufficient to make sure only root can write to it. Isn't the answer somewhere in umask? I tried man umask, but didn't get any info.
Okay, I found a site where I read up on umask. If I were to put the following command:
at the beginning of my backup script, would it then make all my backed-up files have 700 permissions, and then the umask effect would end after the script terminated? Just want to make sure it doesn't last longer than the shell it's used in.