Xref: utzoo alt.folklore.computers:9899 comp.editors:2594
Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: alt.folklore.computers,comp.editors
Subject: Re: A weird error message
Message-ID: <6266@auspex.auspex.com>
Date: 25 Feb 91 18:21:35 GMT
References: <15353@megatest.UUCP> <23887@ttidca.TTI.COM> <2675@inews.intel.com>
Followup-To: alt.folklore.computers
Organization: Auspex Systems, Santa Clara
Lines: 50

>>}I worked on a UNIX system that had an editor called e.  Once entered
>>
>>Hey!  That's my favorite editor.  I'm using it now, in fact.  The "highly
>
>Actually, a good, solid, control-D will get you out, as well.
>
>Umm, it seems to have come with my local Ultrix, but I have
>no documentation.  Anyone care to send me a man-page?

	auspex% ls -li /usr/ucb/e /usr/ucb/ex
	2184 -rwxr-xr-x  6 root       196608 Apr 24  1989 /usr/ucb/e
	2184 -rwxr-xr-x  6 root       196608 Apr 24  1989 /usr/ucb/ex
    
from a SunOS 4.0.3 machine, but the fact that they're links to the same
binary comes from BSD, as does the man page EX(1):

EX(1)                    USER COMMANDS                      EX(1)

NAME
     ex, edit, e - line editor


and the basic code in "main()":

	/*
	 * Main procedure.  Process arguments and then
	 * transfer control to the main command processing loop
	 * in the routine commands.  We are entered as either "ex", "edit", "vi"
	 * or "view" and the distinction is made here.  Actually, we are "vi" if
	 * there is a 'v' in our name, "view" is there is a 'w', and "edit" if
	 * there is a 'd' in our name.  For edit we just diddle options;
	 * for vi we actually force an early visual command.
	 */

	...

		/*
		 * Figure out how we were invoked: ex, edit, vi, view.
		 */
		ivis = any('v', av[0]);	/* "vi" */
		if (any('w', av[0]))	/* "view" */
			value(READONLY) = 1;
		if (any('d', av[0])) {	/* "edit" */
			value(OPEN) = 0;
			value(REPORT) = 1;
			value(MAGIC) = 0;
		}

so I suspect the answer on Ultrix, as well, is "it's just another name
for 'ex'".


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