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I've looked all over and I can't find the answer to fix this. I also recognize I may not know the exact terms to use to search for this issue.

So, I automount my external hard drive using:

udisksct1 mount --block-device /dev/disk/by-uuid/<uuid>

Replacing uuid with the actual id.

When I create a new file (e.g. with touch) or paste a file into this device, the file starts with the permission 777... but I don't want that! At most I would like 666. How do I make it so the new files or pasted files always get created as 666? I've read several places to just use chmod 666 -R * etc, but I don't want to do this every time.

Notes: Running df -T shows that the hard drive is ext4. Not sure if that is important. I am using Ubuntu 16.04 LTS, but using the i3 window manager. Because of this I need to automount on my own since Nautilus doesn't start by default. This hard drive will not likely be used by anyone but me. The umask is 0022.

Luke W. Johnston
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  • try read https://superuser.com/questions/519824/mounting-ext4-drive-with-specified-user-permission and https://unix.stackexchange.com/questions/33330/how-to-make-an-ext4-file-writable-on-mounting-by-a-user-not-root – Alex_Krug Feb 23 '18 at 10:04
  • @Alex_Krug those help me mount the drive, but so far it doesn't fix the problem of all files being created as 777... – Luke W. Johnston Feb 26 '18 at 12:26

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