Fix for dumb or unset TERM

[tdaitx]

This is a fix for when $TERM is unset or set to dumb - eg. the dumb value is used by scp. For some reason clear complains that the TERM variable is not properly set (it is) and causes an error:

$ scp <file> root@dietpi
TERM environment variable not set.
 --------------------------------

With the fix I am able to properly copy the file. I'm using the openssh-server package, I haven't tested it with the default dropbear.

Note that only exporting TERM is not enough, all output should be disabled otherwise scp will fail.

Reference:
export TERM=${TERM:-dumb}

[Fourdee]

exit also gets triggered with dropbear logins.

Heres the value of TERM:
export TERM=${TERM:-dumb}; echo -e "$TERM"
xterm

I tested with the following, exit doesnt get triggered with dropbear:
if [ "$TERM" = "dumb" ]; then

Tested with the following to confirm trigger works (exit got triggered):
if [ "$TERM" = "xterm" ]; then

If you can test with openssh server, just to verify:
if [ "$TERM" = "dumb" ]; then

Thanks tdaitx.

[tdaitx]

Yes, exit is triggered on scp with openssh server and not triggered on the usual ssh login (just it should be). Thanks!

[Fourdee]

Thanks tdaitx,

I'll add this to the master branch manually. I'am unable to change/modify the code in this request as i dont have access to "patch-2".

Also moved to the login script line 39. This should prevent any further SCP connection issues down the road.
https://github.com/Fourdee/DietPi/blob/master/dietpi/login