[Jslib] Use of 'spawn'

[Mark Wood]

I'm attempting to use the 'spawn' method of FileUtils without any luck. 
 I'm attempting to call a simple shell script using:

var fileUtils = new FileUtils();
fileUtils.spawn( "fullPathToShellScript" );

It doesn't return any errors, but it also doesn't execute the script. 
 The permissions don't appear to be a problem.  I'm running Mozilla 
0.9.3 on Linux.  Is there anything obvious I'm leaving out?

Mark Wood
OEone Corporation