Binary package “vttest” in ubuntu jammy

tool for testing VT100 compatibility of terminals

 This package provides a program designed to test the functionality of
 a VT100 terminal (or emulator). It also supports analysis of VT220,
 VT420, and xterm.
 .
 The program is menu-driven and contains full on-line operating
 instructions. It tests both display (escape sequence) and keyboard
 handling.