изменить представление ядра о размере консоли (change kernel idea of the console size)
Имя (Name)
resizecons - change kernel idea of the console size
Синопсис (Synopsis)
resizecons COLSxROWS
resizecons -lines ROWS
Описание (Description)
The resizecons command tries to change the videomode of the
console. There are several aspects to this: (a) the kernel must
know about it, (b) the hardware must know about it, (c) user
programs must know about it, (d) the console font may have to be
adapted.
(a) The kernel is told about the change using the ioctl
VT_RESIZE. This causes the kernel to reallocate console screen
memory for all virtual consoles, and might fail if there is not
enough memory. (In that case, try to disallocate some virtual
consoles first.) If this ioctl succeeds, but a later step fails
(e.g., because you do not have root permissions), you may be left
with a very messy screen.
The most difficult part of this is (b), since it requires
detailed knowledge of the video card hardware, and the setting of
numerous registers. Only changing the number of rows is slightly
easier, and resizecons will try to do that itself, when given the
-lines option. (Probably, root permission will be required.) The
command resizecons COLSxROWS will execute restoretextmode -r
COLSxROWS (and hence requires that you have svgalib installed).
Here COLSxROWS is a file that was created earlier by
restoretextmode -w COLSxROWS. Again, either root permissions are
required, or restoretextmode has to be suid root.
In order to deal with (c), resizecons does a `stty rows ROWS cols
COLS' for each active console (in the range tty0..tty15), and
sends a SIGWINCH signal to selection if it finds the file
/tmp/selection.pid.
Finally, (d) is dealt with by executing a setfont command. Most
likely, the wrong font is loaded, and you may want to do another
setfont yourself afterwards.
Ошибки (баги) (Bugs)
resizecons does not work on all hardware. This command used to
be called resize, but was renamed to avoid conflict with another
command with the same name.
Смотри также (See also)
setfont(8), stty(1), selection(1), restoretextmode(8),
disalloc(8)
