How to check if a program is running with Ruby?

[Whaat]

I am pretty sure this can be done. I have done some research but have not found what I am looking for yet.

I just need to know if a given program is running.

Something like this:

if ("indigo.exe").is_running?

do something

end

Maybe it has to be done with a system call...but which call?

[tbd]

here is one quick way

require "win32ole"
procs = WIN32OLE.connect("winmgmts;\\\\.")
all_proc = []
procs.InstancesOf("win32_process").each do |proc|
  all_proc.push proc.name.to_s.downcase
end
p all_proc.include?("indigo.exe")

[Whaat]

Thanks, but I get this error message when SketchUp loads:

Error Loading File ProcessTest.rb
No such file to load -- win32ole

It would be great if this would work without the need for another file.

[tbd]

you need win32ole.so for that example.
... but you still need another file to access process identification (win32ole or win32api)