change foreground virtual terminal
chvt [ option ...] N
The command chvt N makes /dev/ttyN the foreground terminal. (The corresponding screen is created if it did not exist yet. To get rid of unused VTs, use deallocvt(1).) The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
" -V, --version" print program version and exit;
" -h, --help" show this text and exit.