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Re: [kde] controlling location of trash on per-filesystem basis?




D. R. Evans posted on Wed, 11 May 2016 15:33:13 -0600 as excerpted:

> System: debian jessie; KDE 4.14.2.
> 
> Typically, I have about 20 filesystems of various kinds mounted on my
> desktop system.
> 
> How do I control, per filesystem, whether files sent to trash from that
> filesystem go to a .Trash-<nnnn> directory located on that same
> filesystem or whether they go to the home trash located at
> ~/.local/share/Trash?
> 
> For some of the filesystems it makes a lot of sense to send the files to
> a trash directory located on the filesystem; but for other filesystems
> it makes much more sense to send the file to the home trash.
> 
> (Right now, the behaviour seems to be always to create and use a trash
> directory on the filesystem of the file being trashed.)

FWIW I've all but disabled trash here (it's set to warn at 0.001%, the 
smallest possible setting and a few KiB on most of my filesystems, in 
case I ever accidentally use it) as I normally prefer to really delete 
files when I want to delete them, but I will occasionally use "trash" for 
a temporary rename/move, say for testing, and then simply pull whatever 
back out of the trash when I'm done.

So I don't actually use trash much here and am not the ideal person to 
ask, but...

I believe I read somewhere, and it makes sense, that the trash mechanism 
will try to create that .Trash dir at the root of whatever filesystem, 
and will use it if it can do so.

But if permissions at the root of that filesystem are such that the trash 
dir can't be created there, the location in $XDG_DATA_HOME (~/.local/
share being the default location if the var isn't set) will be used 
instead.

If that is indeed the case, all you need to do to on filesystems you 
don't want trash dirs to appear on is arrange for the filesystem root dir 
to be owned by some other user, say root, and set read-only for the 
normal user(s) that would otherwise be creating and trashing files on 
that filesystem, so they can't create their trash dirs.  Then the default 
$XDG_DATA_HOME location should be used.

Alternatively, if you want the filesystem's root dir to be owned by root 
and not writable by the users, but still want them to be able to put 
their trash there, pre-create the trash dirs and chown them to the 
appropriate user.


As I said, I don't normally use the trash subsystem and am not sure on 
the above, but it does make sense, and is the first thing that I'd test 
were I to be trying to control trash locations like that, here.

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman

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