[ROOT] How to find out the system process list?

From: Jianglai Liu (jianglai@jlab.org)
Date: Wed Sep 03 2003 - 06:14:30 MEST 

Dear ROOTers,

I am implementing a launcher button on a ROOT GUI program to invoke
another executable. But I like to test whether the process has been
running already. A quick and dirty solution I am using is 
(in pseudo-code language)

-- gSystem->Exec("ps -u user | grep program >.tmp");
-- Parse the tmp file and find if program exists

Is there a better way in TSystem (or whatever ROOT class) that
might handle the system calls in a more elegant way?

Thanks in advance!

Jianglai

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