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-p SerialNo
Plugs in a virtual serial port device with number SerialNo. SerialNo must be greater than zero. You should plug in 2 devices for creating one virtual null modem device.
-u SerialNo or 0
Unplug a virtual serial port device with number SerialNo. Please, specify 0 to unplug all devices enumerated so far.
-e SerialNo or 0
Eject a virtual serial port device with number SerialNo. Please, specify 0 to eject all the devices enumerated so far.
-i <INF_File> <Hardware_ID>
Install device driver INF_File for device Hardware_ID.
-ia
Install all Virtual Null Modem's devices drivers.
-r <Hardware_ID>
Remove device Hardware_ID.
-ra
Remove all Virtual Null Modem's devices drivers.
-s0
Don't show messages (verbose mode).
-s1
Write messages to Windows events log.
-s2
Show message box with messages (default).
-pa
This parameter plugs in all virtual serial port devices. The program reads port number from the HKEY_LOCAL_MACHINE\SOFTWARE\AGG Software\Virtual Null Modem branch from the "Ports" (REG_SZ) key. This key is created automatically by GUI application.
Key value example: 2,7,
Note: The order of parameters is very important. For examples, if you want to get silent install of drivers then you should use the following command prompt.
vnullmod -s0 -ia