Newbie question - running a command and looking at output

[Dave]

I'm trying to run a command (arch -k) and check if the value returned is 
'sun4v' or not.


kirkby at t2:[~] $ arch -k
sun4v

In fact, I want to do 3 three things

1) Check if the system is Solaris.
2) If it is Solaris, check if 'arch -k' prints 'sun4v'
3) If both 1 and 2 are true, copy a file.


Since arch -k is not supported on all systems, the test for Solaris must 
be made first.

I have a test for Solaris (aka SunOS), which copies a file if the 
systems is running Solaris:

import os, shutil

if os.uname()[0] == 'SunOS':
    shutil.copy2('foo.c','bar.c')

How can I change that, so the copy is only performed if 'arch -k' prints 
'sun4v'?



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