Debug Nextion display from your linux terminal.

nextion

#!/bin/bash

#############################################
#                                           #
#  [Installation]:                          #
#    1. Paste this file in ~ directory      #
#    2. chmod +x ./nextion                  #
#                                           #
#  [Usage]:                                 #
#    ./nextion baudrate usbaddress          #
#                                           #
#  [Example]:                               #
#    ./nextion 9600 /dev/ttyUSB0            #
#                                           #
#  [Nextion Commands]:                      #
#    https://nextion.tech/instruction-set/  #
#                                           #
#############################################


echo "Welcome to Nextion Serial Terminal, ";
echo -e "use :q command to quit.\n";

while read line && [ "$line" != ":q" ];
do
  ( stty raw speed $1 >/dev/null; echo -ne "$line\xFF\xFF\xFF" ) >$2 <&1;
  echo -e "\e[32mSent \u2713\e[39m";
done

echo "Goodbye.";