Path: utzoo!mnetor!uunet!steinmetz!davidsen
From: davidsen@steinmetz.ge.com (William E. Davidsen Jr)
Newsgroups: comp.unix.wizards
Subject: Re: an rm question
Message-ID: <10431@steinmetz.ge.com>
Date: 14 Apr 88 18:15:43 GMT
References: <27133@yale-celray.yale.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Organization: General Electric CRD, Schenectady, NY
Lines: 31

One of the nice things about Korn shell is the 8 bit capability. I can
get evil names out by using something like this:
	fname=`echo "*\\0200*"`
			 ^^^ any octal code for a magic character
	rm $fname

I don't have Xenix source so I can't prove it's not brain damaged.  I
suspect that high bit files are like files starting with '.', and they
have to be explicitly named or they are ignored.  Try:

	mkdir expendable
	cd expendable
	date > .x
	date > y
	ls -la		# show .x and y
	rm *		# delete everything
	ls -la		# .x still there
	cd ..
	rm -r expendable # now the file goes away

  I don't have a virgin copy of BSD, but it works that way on Ultrix.
Now on Ultrix you can't create a file with the high bit set, at least
not easily. If you did I would bet it works the same way as '.' files,
so I think Xenix may be okay on this one.

  For international UNIX we need more than seven bits in a filename, so
if you disagree please use a new header, it's a separate topic.
-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me