From: Nuralanur@...
Date: 2006-08-02T05:03:47+09:00
Subject: 'system' and windows and an external program

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Dear all,
 
I have a Ruby program that does some lengthy calculations and outputs
a matrix, which I'd like to write to a Postscript or PDF using Latex file  
for readability
(and re-usability in some lengthier text).
I have managed to put together the Latex code using Ruby, so I can  start
Latex using the system command
 
  system('latex ' + filename[0...filename.index('.')] + '.tex')
 
This works.
To turn it into a Postscript file, I need another command
 
       system('dvips ' +  filename[0...filename.index('.')])

This works also and creates a new Postscript file.
But now, I'd like to open a Ghostview window to show the output in  the
Postscript file automatically from the same Ruby script that did all  the
previous work and I'd like Ghostscript to stay open even after the  Ruby
program finishes.
 
I've tried 
          system('gsview32 ' +  filename[0...filename.index('.')] + '.ps'),
 
but here nothing happens - no Ghostscript window pops up and  nothing
else happens. So I still need to call Ghostscript by hand.
How could this problem be solved in Windows XP?
 Is the solution any different under Linux ?
 
Thank you very much!
 
Best regards,
 
Axel 

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