J. Roeleveld writes:

Joseph <syscon...@gmail.com> wrote:

ls -l /dev/ttyS0 crw-rw---- 1 root tty 4, 64 Sep 17 20:56
/dev/ttyS0

Is the above correct permission?

Those are default permissions. However those normally won't give a
normal user access. You can change the permissions of that
file/device to enable your user to have access.

I am typing this on my mobile and can't quickly tell you how to do
that on a permanent basis. But for a quick change you can use 'chown'
to change the owner to your own user.

What about 'gpasswd -a <user> tty' to add the tty group to the user? Needs a re-login to make use of the changes.

        Wonko

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