This is the command disper that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
disper - on-the-fly display switcher
disper [options] (-l|-s|-c|-e|-p|-i)
Disper re-routes your screen output to one or more connected displays. For example when
giving a presentation, all one wants is that the beamer, which has just been connected, is
able to show whatever you prepared.
There is the option to either clone all detected displays, or extend the desktop to them.
Resolutions are automatically detected by default. For cloning, the highest resolution
supported by all displays devices is chosen; for extending every display device gets its
preferred or highest supported resolution. For special setups requiring more detailed
control, one can still use the vendor-supplied display configuration utilities.
show program's version number and exit
show this help message and exit
show what's happening
be quiet and only show errors
-r RESOLUTION, --resolution=RESOLUTION
set resolution, e.g. "800x600", or "auto" to detect the display's preferred
resolution, "max" to use the maximum resolution advertised, or "off" to disable the
display entirely. For extend it is possible to enter a single resolution for all
displays or a commaseparated list of resolutions (one for each display). Beware
that many displays advertise resolutions they can not fully show, so "max" is not
-d DISPLAYS, --displays=DISPLAYS
comma-separated list of displays to operate on, or "auto" to detect; the first is
the primary display.
-t DIRECTION, --direction=DIRECTION
where to extend displays: "left", "right", "top", or "bottom"
flat-panel scaling mode: "default", "native", "scaled", "centered", or
comma-separated list of plugins to enable. Special names: "user" for all user
plugins in ~/.config/disper/hooks; "all" for all plugins found; "none" for no
colon-separated list command-line arguments to cycle through; "-S:-c:-s" by default
Select exactly one of the following actions
list the attached displays
only enable the primary display
only enable the secondary display
export current settings to standard output
import current settings from standard input
cycle through the list of cycle stages
Use disper online using onworks.net services