command line tool for process communication

[aditya shukla]

Hello guys,

I have a program which is run through command line .I am trying to create
another command line tools which controls this program.
So for example in my new program when i give

newprog -a then it should invoke the existing tool and perform one of its
operation.eg existtprog -s

How could this be done in python? Optparse can be used to make the new tool
but what should be done to control the existing tool from the new tool?

Thanks in advance.

Aditya
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