DEALLOCVT
NAME SYNOPSIS DESCRIPTION SEE ALSO
deallocvt - deallocate unused virtual terminals
deallocvt [__ ''N1 N2'' __...?
If given no argument, the program deallocvt deallocates kernel memory and data structures for all unused virtual terminals. If arguments Ni are given, only TTY's /dev/ttyNi are deallocated.
A virtual terminal is unused if it is not the foreground console, and no process has it open for reading or writing, and no text has been selected on its screen.
3 pages link to deallocvt(1):