exclon — reserve tty for exclusive use
exclon
exclon attempts to reserve your terminal for exclusive use.
This means that any attempt to open your terminal, including through /dev/tty
, will fail.
excloff attempts to undo the effect of exclon(1).
Exception:
root
can still open your terminal.
On most systems this means that talk(1) is not affected by exclon even though write(1) is.