Beware of Blindly Un-SHARing a File

[Tony O'Hagan]

	A suitable format for sending shar files might be to write a
standard shar program which creates the usual bourne shell command
files that can be executed at any site, but also integrate an unshar
(or unmar) program into the news package which treats the shell
commands in shar files purely as file delimiters - i.e. it doesn't
execute them.

	This would mean the shared file could be unpacked by any site
with the Bourne shell (after being checked manually for security
problems) or automatically checked and unpacked by sites which have
installed the extension to their news service.