Secure (regular) Scripts_

[Nik Simpson x333]

	I encountered this problem writing some menu based code a couple of 
years ago,  in most case programs that allow a shell escape seem to check
the value of the shell variable SHELL,  and exec this as the shell.  If 
you change SHELL either using putenv if you are working in executable
or 
	SHELL="something harmless";export SHELL

	In a script this disbles shell escapes from most well behaved programs
in my experience.
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|  Nik Simpson	UUCP :  uunet!ingr!swndn!st_nik!nik|
|  Senior Systems Engineer.     Intergraph UK Ltd. |
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