Only allow the users list to be opened once

src/freedombone-image-customise

 # Whether to enable zeronet on the mesh
 ENABLE_ZERONET=
 
+MESH_TEXT_EDITOR='pluma'
+
 function configure_backports {
     echo "deb http://${DEBIAN_REPO}/debian/ ${DEBIAN_VERSION}-backports main" >> $rootdir/etc/apt/sources.list
 }
 if [ \$no_of_users -gt 0 ]; then
     echo "\$users_list" > /home/$MY_USERNAME/Users.txt
     chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Users.txt
+
+    echo 'showing_users=\$(ps aux | grep $MESH_TEXT_EDITOR | grep "Users.txt")' > /home/$MY_USERNAME/showusers
+    echo 'if [ \${#showing_users} -eq 0 ]; then' >> /home/$MY_USERNAME/showusers
+    echo '    $MESH_TEXT_EDITOR /home/$MY_USERNAME/Users.txt' >> /home/$MY_USERNAME/showusers
+    echo 'fi' >> /home/$MY_USERNAME/showusers
+    echo 'exit 0' >> /home/$MY_USERNAME/showusers
+    chmod +x /home/$MY_USERNAME/showusers
+    chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/showusers
+
     echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/Users.desktop
     if [ \$no_of_users -lt 2 ]; then
         echo "Name=\$no_of_users Other User" >> /home/$MY_USERNAME/Desktop/Users.desktop
     fi
     echo 'Type=Application' >> /home/$MY_USERNAME/Desktop/Users.desktop
     echo 'Comment=List of users' >> /home/$MY_USERNAME/Desktop/Users.desktop
-    echo 'Exec=pluma /home/$MY_USERNAME/Users.txt' >> /home/$MY_USERNAME/Desktop/Users.desktop
+    echo 'Exec=bash /home/$MY_USERNAME/showusers' >> /home/$MY_USERNAME/Desktop/Users.desktop
     echo 'Icon=/usr/share/freedombone/avatars/anon002.jpg' >> /home/$MY_USERNAME/Desktop/Users.desktop
     echo 'StartupNotify=false' >> /home/$MY_USERNAME/Desktop/Users.desktop
     chmod +x /home/$MY_USERNAME/Desktop/Users.desktop
     chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Desktop/Users.desktop
 
     if [ ! -f /home/$MY_USERNAME/runtox ]; then
-        echo 'qtox_running=\$(ps aux | grep qtox | grep data)' >> /home/$MY_USERNAME/runtox
+        echo 'qtox_running=\$(ps aux | grep qtox | grep data)' > /home/$MY_USERNAME/runtox
         echo 'if [ \${#qtox_running} -eq 0 ]; then' >> /home/$MY_USERNAME/runtox
         echo '    bash -c "qtox -p data"' >> /home/$MY_USERNAME/runtox
         echo 'fi' >> /home/$MY_USERNAME/runtox