gtkterm 1.2.1-1 (armhf binary) in ubuntu mantic

 gtkterm is a simple GTK+ terminal used to communicate with the serial port.
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 Its features :
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  * Serial port terminal window
  * Serial port setup (speed, parity, bits, stopbits, flow control)
  * Using the termios API
  * Possible to send a file (only RAW data, no protocol)
  * End of line delay while sending a file
  * Special character wait before next line while sending a file
  * Possible to toggle control lines manually (DTR, CTS)
  * Also reads the state of control lines (RTS, CD, DSR, RI)
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  Author: Julien Schmitt <julien@jls-info.com>