From: Bill Dunlap <bill@insightful.com>
X-Authentication-Warning: octopus.insightful.com: bill owned process doing -bs
Date: Tue, 13 Aug 2002 13:39:44 -0700 (PDT)
X-Sender: bill@octopus
To: Naomi Altman <naomi@stat.psu.edu>
Subject: Re: [S] ___ files
On Tue, 6 Aug 2002, Naomi Altman wrote:
> I have some very large files on my .Data directory (Unix) that start
> "___" e.g. "___6oe7". Can I safely get rid of these?
Yes. The files in .Data of the form 3 underscores followed by
some letters and digits are ok to get rid of. (Those letters
and digits should be the hexidecimal representation of the
the process id, perhaps with some trailing stuff, so only 0-9 and
a-f should be there.)
Files of the form 2 underscores followed by digits are not ok to
get rid of!
The first sort of file is used by Splus to write a dataset into.
If it is successful writing the entire dataset (there was enough
space, it wasn't interrupted, there were no permission problems)
then it renames it to the proper name of the object. E.g.
x <- 1:10
causes Splus to put 1:10 into the file
___45ac0
and if that file was completely written without any probems it renames it
x
The most common reason for failure to completely write the file is that
the disk filled up so these orphaned files tend to be large. They ought
to be removed when that happens but Splus doesn't remove them now.
----------------------------------------------------------------------------
Bill Dunlap 22461 Mt Vernon-Big Lake Rd
Insightful Corporation Mount Vernon, WA 98274
bill@insightful.com 360-428-8146
"Formerly known as MathSoft, Insightful Corporation provides analytical
solutions leveraging S-PLUS, StatServer and consulting services."
"All statements in this message represent the opinions of the author and do
not necessarily reflect Insightful Corporation policy or position."
Naomi S. Altman 814-865-3791 (voice)
Associate Professor
Dept. of Statistics 814-863-7114 (fax)
Penn State University 814-865-1348 (Statistics)
University Park, PA 16802-2111
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