Path: utzoo!attcan!uunet!jarthur!usc!cs.utexas.edu!rutgers!cunixf.cc.columbia.edu!vw3
From: vw3@cunixf.cc.columbia.edu (Vernon Williams)
Newsgroups: comp.sys.apple2
Subject: Re: Parent pointers
Message-ID: <1990Sep5.031342.27820@cunixf.cc.columbia.edu>
Date: 5 Sep 90 03:13:42 GMT
References: <5928366@ub.cc.umich.edu>
Organization: Columbia University
Lines: 24

In article <5928366@ub.cc.umich.edu> Tabakal@UB.CC.UMICH.EDU writes:
>Do standard ProDOS subdirectories have a pointer to their parent 
>directory?  Or do they have to scan from root to find it?  It seems
>that noone implements the equivalent of a .. parameter when they
>implement a change directory command (with the exception of APW).

Not entirely true. Don Elton's ECP8 has such a command. It's the \
(backslash) command. Invoking this command sends you up one directory 
level as does ".."

>I've never understood why.  It's very useful when you're hopping
>from children to parent to sibling directories.

I can't imagine why either. It seems that it woulkd be a most helpful
command to have especially in "command line" environments...

[Tod's sig deleted]



+-------------------------------------------------------+--------------------+
|Vernon Williams					| vw3@cunixf         |
|Evening Supervisor/Library Assistant			+--------------------+
|Thomas J. Watson Library of Business and Economics	| 130 Uris Hall      |