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From: ken@racerx.UUCP (Ken Hardy)
Newsgroups: comp.unix.aix
Subject: Re: Where is the -x option for vi
Summary: It's a secret
Keywords: lost option???
Message-ID: <579@racerx.UUCP>
Date: 25 Apr 91 22:39:01 GMT
Article-I.D.: racerx.579
References: <1991Apr25.022749.22026@lynx.CS.ORST.EDU>
Organization: Bridge Information Systems, St. Louis
Lines: 21

In article <1991Apr25.022749.22026@lynx.CS.ORST.EDU>, ghe@physics.orst.edu (Guangliang He) writes:
> I don't know how many people is still using vi nowadays. But I still am. 
> But today, I just found out the 'vi' on AIX 3.1 doesn't know the -x option
> at all. I found -x option on all other UNIX machine I've used here, SUN, 
> Ridge, Sequent.... Is there anyone knows why the -x option is lost by IBM? 

The encryption algorithm used by crypt and vi -x is, I believe,
restricted to domestic use due to "national security" concerns.  So
many vendors are not putting it into their default distributions.

Try "man crypt".

I rolled my own crypt, called "krypt" (clever, no?), just for my own
uses.  I'm sure the Rooskies could crack pretty easily, since it
doesn't use any higher-mathematics type algorithms, ala DES.


-- 

Ken Hardy                         uunet!racerx!ken
Bridge Information Systems        ken@racerx.com