Update new-host.sh

new-host.sh

@@ -28,7 +28,8 @@ fi
 
 function getCurrentGithubId() {
   local RESULT;
-  RESULT=$(ssh -o "IdentitiesOnly=yes" -i ~/.ssh/id_ed25519 -T git@github.com </dev/null 2>&1) || echo "$RESULT" >&2; exit 1
+  RESULT=$(ssh -o "IdentitiesOnly=yes" -i ~/.ssh/id_ed25519 -T git@github.com </dev/null 2>&1) 
+  [[ $? -ne 255 ]] || echo "$RESULT" >&2; exit 1
   USERNAME=$(echo "$RESULT" | sed -n 's/^Hi \([^!]\+\)! You'"'"'ve successfully authenticated, but GitHub does not provide shell access\.$/Successfully authenticated to GitHub as \1/; T; p') || exit 1
   echo "$USERNAME"
   [[ -n "$USERNAME" ]];