From: Zundra Daniel <zundra.daniel@...>
Date: 2009-10-08T04:15:21+09:00
Subject: Safe command line execution

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Hi all.  I have a application that needs to execute a system call via
command line.  However, the problem I'm running into is this particular
command takes a username and password both of which can be any pattern and
combination of special characters.  Does anyone know of a way to safely
execute this command with these free form parameters without risk of
malicious code being inadvertently executed?  The pattern of the command is
as follows:

/usr/bin/cmd -username #{username} -password #{password}

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