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Logout out then log back in, then you'll be good for your permissions and group membership.

Good afternoon Tommylight thanks, I tried something pretty similar to this with out the < > .

That was several tries back

i just tried it and i added the < > with my username in the middle of the<> and i got a
bash: syntax error near unexpected token 'newline'

next i tried without the < > and i got asked for my password,       that is good correct?

i made a typo next, trying the stty -F /dev/ttyS0

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and on the 2nd try with the stty i got permission denied again.

if i make a typo do i lose my root access? and need to start over with dialout line ?

i tried the whole process starting with the  " ls " again,  no typos and still permission denied

Since the command line has my name twice that means i am logged in correct?   does that mean  i am logged in a both user and admin?