UltraEdit / UEStudio supports several command line parameters for launching the application from the Windows command prompt. By default, UltraEdit / UEStudio are added to your user %PATH% environment variable so you can invoke the application from any directory. UltraEdit can be invoked from the command line by using either uedit32 or uedit64 for the 32-bit and 64-bit versions, respectively. UEStudio (both 32-bit and 64-bit) can be invoked from the command line by using uestudio.
You can open a file in UltraEdit via the command line by entering the file path/name immediately after the application name. For example: uedit64 d:\projects\juce\juce.h
You can open multiple files by:
uedit64 file1.txt file2.txt "some file with spaces.txt"
uedit64 d:\temp\*.c
uedit64 /f=c:\temp\file_list.txt