deallocvt [N ...]
The command deallocvt deallocates kernel memory and data
structures for all unused virtual consoles. If one or
more arguments N ... are given, only the corresponding
consoles /dev/ttyN are deallocated.
A virtual console is unused if it is not the foreground
console, and no process has it open for reading or writ
ing, and no text has been selected on its screen.
chvt(1), openvt(1)
17 Mar 1997 DEALLOCVT(1)