Here’s a snippet that shows how to launch a command-line program in a command prompt window, and keep the command prompt window open so you can see the output. Note that does not block Softimage.

#sKick = "C:/Users/SOLIDANGLE/Documents/Workgroups/sitoa-2.5.0-2013/Addons/SItoA/Application/bin/nt-x86-64/kick.exe"
sKick = XSIUtils.BuildPath( Application.InstallationPath( 2 ), "Addons", "SItoA", "Application", "bin", XSIUtils.Environment("XSI_CPU_OPT"), "kick.exe" )
XSIUtils.LaunchProcess( "cmd /C start cmd /K %s -licensecheck" % sKick )

Basically, what this does is launch a cmd.exe process, and in that process, run the command “start cmd /K kick -licensecheck”. The second “cmd” is required to open a command prompt, where you’ll see the output of “kick -licensecheck”.

In JScript, it would be something similar:

sKick = XSIUtils.BuildPath( Application.InstallationPath( 2 ), "Addons", "SItoA", "Application", "bin", XSIUtils.Environment("XSI_CPU_OPT"), "kick.exe" )
XSIUtils.LaunchProcess( "cmd /C start cmd /K " + sKick + " -licensecheck" )

In Python, you could also do this:

from subprocess import call
call(["cmd", "/K", sKick, "-licensecheck"])

The above would open a non-blocking command prompt window (eg you could go back to Softimage), but this next snippet would prevent Softmage from responding until you closed the command prompt:

import os
os.system("cmd /k %s -licensecheck" % sKick)