🚀 go-pugleaf

In article <1992Nov3.170233.2839@umr.edu> jlu@cs.umr.edu ( Eric Jui-Lin Lu  
) writes:
> How shall I do to empty users' recycler whenever they logout/login?
> Most of our users don't know (or forget) to empty their recyclers.
> And it's untolerable in our env -- short of disk space.  As I know,
> Mac will clean up all the trashes whenever users logout.  Is
> there anything similar here in next?  Thanks in advance!

The shortcut would be to write something to do it, and then install it as  
a loginhook and/or logouthook (using a dwrite).

Paul
-- 
Paul Lynch
P & L Systems                   (NeXTmail) paul@seer.demon.co.uk
Tel: (0494)671501                      paull@cix.compulink.co.uk
Fax: (0494)680228                       76711.451@compuserve.com

In article <1992Nov3.170233.2839@umr.edu> jlu@cs.umr.edu
	( Eric Jui-Lin Lu ) writes:
>How shall I do to empty users' recycler whenever they logout/login?
>Most of our users don't know (or forget) to empty their recyclers.
>And it's untolerable in our env -- short of disk space.

We had a similar problem--lots of recoverable disk space tied up
in recyclers and uncompacted mailboxes.  But we took a different
approach: we opted to educate our users.


Reminders don't hurt, so I wrote a LoginHook to display a Panel
with a disk usage "meter" showing the same percentage _df_ would,
and the actual amount free below that.  [The information comes
from a statfs() call.]  Then a horizontal Box rule, and easy-to-
follow instructions to encourage the desired behavior (see
attached graphic).

The Panel only appears if the /Users filesystem is at least 60%
full, and goes away if the user clicks the Panel's close button,
the "OK" button in the lower-right-hand corner, presses return
(i.e. the keyEquivalent), or after 20 seconds.

It worked--disk usage dropped dramatically within a few days.


"For you comp.sys.next.programmer types"

The application is totally straightforward, created in Interface
Builder, and containing a very small amount of custom code.

When operating as a LoginHook, I don't want it to display a main
menu or an application tile.  This is simple to accomplish, but
UNDOCUMENTED.  Here's the "secret" for 2.x; 3.0 is probably
similar (don't look at me, I'm waiting for 3.1):

Subclass Application, and override the internal _replyToLaunch
method as follows:

- _replyToLaunch
{
    if (NXGetDefaultValue("ApplicationKit", "MachLaunch"))
	[super _replyToLaunch]; // ignore the warnings this generates
    else [self setMainMenu:nil];
    return self;
}

N.B. this still allows things to function normally when launched
from the Workspace.

You also need one additional line in an appDidInit: method:

    if (![NXApp mainMenu]) (void)[NXApp activateSelf:YES];

That's all.  [Usual caveats and disclaimers.]

					-=EPS=-
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M%P`$`````0``(8X!&@`%`````0``(BP!&P`%`````0``(C0!'``#`````0`"
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`
end

By popular demand, a "full source" LoginHook example has been
submitted to sonata.cc.purdue.edu and cs.orst.edu as
DiskPig1.0.tar.Z (it's also available in sutro.sfsu.edu's pub
directory if you don't trust things in submissions).  Note
that this program DOES NOT delete any files--it merely tells
users what they need to do.

This version has only been tested on 2.1 (it should work on any
2.x system).  It has NOT been tested on 3.0, and is not
guaranteed to work on 3.0!

					-=EPS=-