AVR Freaks

Thanks all, for the hints.  The command line help built into atprogram.exe is pretty good so through that I learned how to replicate the VS functionality I cited above with:

atprogram -t atmelice -i updi -d attiny817 program -c -fl -fs --verify -f myApp.elf

Next, I copied atprogram.exe and myApp.elf to a USB stick so that I could take it to another computer without AS installed to test.  Here is the result of the test on the other computer:

E:\>atprogram -t atmelice -i updi -d attiny817 program -c -fl -fs --verify -f myApp.elf
[ERROR] Could not find atbackend.exe

I added atbackend.exe to my USB stick and tried again:

E:\>atprogram -t atmelice -i updi -d attiny817 program -c -fl -fs --verify -f myApp.elf
[ERROR] An unexpected error occurred when executing.
Traceback (most recent call last):
  File "atmel\atprogram.py", line 48, in run
  File "atmel\avr\cli\commandline.py", line 54, in execute_commands
  File "atmel\avr\cli\commandexecutor.py", line 52, in execute_commands
  File "atmel\avr\cli\resourcemanager.py", line 44, in prepare_resources
  File "atmel\avr\cli\resourcemanager.py", line 51, in _prepare_resource
  File "atmel\avr\cli\resourcecontainers.py", line 54, in allocate
  File "atmel\avr\cli\backend.py", line 134, in start
  File "subprocess.py", line 710, in __init__
  File "subprocess.py", line 958, in _execute_child
WindowsError: [Error 193] %1 is not a valid Win32 application

Obviously atprogram.exe not a completely stand alone program.

Is it even possible to do what I'm attempting?

Thanks