DEALLOCVT(1) General Commands Manual DEALLOCVT(1)
deallocvt - deallocate unused virtual consoles
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 writing, and no text has been
selected on its screen.
17 Mar 1997 DEALLOCVT(1)