The DDM 1.x command line usage is found in the readme.txt =
C:\Program Files (x86)\Dell\Dell Display Manager\readme.txt

The DDM 2.x command line usage is found in the ReadMe =
The readme is found by by right clicking on the DDM menu in the system tray, then click ReadMe.

Thanks for your reply.

If I install DDM 1.X, the command is in that path you provided. But in DDM 2.0, I can't find any file like that? And some commend in 1.X won't affect after I upgrade to 2.0? So that why I'm looking for command of  DDM 2.0.

<Correct above. DELL-Chris M>

Hi is there any update on this?  I used the command line via a batch file to flip between computers on the same monitor.  It looks like the ddm.exe is still there in version 2.0 but may have lost or changed the command line arguments.  I have been trying to find the arguments but no luck so far]

This is desperately need. All search results point to the dell display manager 1.0. There is no documentation for cli for DMM2.0.

The specified a path is to the DDM 1 docs. There is no readme file for DDM 2.. I also get no response when I attempt to try any command line arguments with it. Was CLI support removed in version 2? If so, why?

Hello? where is CLI for 2.0?

DDM 2.0 CLI (command line interface)

WriteActiveInput [DVI2/HDMI/DP2,etc] = switches active input
ReadActiveInput [DVI2/HDMI/DP2,etc] = switches active input
RestoreFactoryDefaults = restores factory defaults
AutoSetup = executes an autosetup (analog only)
ReadColorPreset = read the current color preset
WriteColorPreset = set the color preset
RestoreLevelDefaults = restores level defaults
RestoreColorDefaults = restores color defaults
WriteBrightnessLevel X = sets brightness to X% (0-100)
ReadBrightnessLevel X = sets brightness to X% (0-100)
WriteContrastLevel X = sets contrast to X% (0-100)
ReadContrastLevel X = sets contrast to X% (0-100)
WritePowerMode [on/off/standby] = sets the display power mode (standby should be used for central control.)
WriteOptimalResolution = switches to optimal resolution
WriteEALayout [X] = changes Easy Arrange grid type to X (0-48) where 0 is to turn off EA layout
Rescan = rescans display hardware
ReadControl X Y = sets hex control X to hex value Y
WriteControl X Y = sets hex control X to hex value Y
IncreaseControl X Y = increases the value of control X by Y
DecreaseControl X Y = decreases the value of control X by Y
WritePxP [Off/PiP/PBP Main Sub1] = Change PIP/PBP settings
WriteSubInput [DP1, DP2, HDM1... etc}] = Change the subinput
SwapVideo = Swaps the main (primary and sub inputs between 2 PCs
SwapUSB = swaps the usb inputs on the main and sub inputs (for 2 PBP mode only)
Zoom = switches between PxP and fullscreen mode
Exit = terminates the program

Can anyone provide an example of how I could call WriteActiveInput on a per basis? I need the equivalent of the command below for DDM 2.0 =

"C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe" /:SetActiveInput [DP/HDMI/..]

My thanks to nebriv for providing these =