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Re: Unset TMP/TEMP in profile? (was Re: [ANNOUNCEMENT] [1.7] Updated: cygwin-1.7.0-67)

On 12/1/2009 5:44 AM, John Morrison wrote:
On Tue, December 1, 2009 9:15 am, Corinna Vinschen wrote:
I'm wondering if /etc/profile is actually the right place for unsetting
TMP and TEMP.  What about etc/defaults/etc/skel/.bashrc instead?  It
allows every user simple access to the setting of TMP and TEMP and it
could be seasoned with a user-visible comment.

Unsetting them in the skel .bashrc files shouldn't be a problem to do, but on my system...

$ echo $TMP

Tue Dec 01 10:40 AM
$ unset TMP

Tue Dec 01 10:40 AM
$ echo $TMP

Tue Dec 01 10:40 AM $

They don't get 'reset' to the windows default... but then, I've not really
been following this thread.  Is that what's wanted?

No, they're not expected to get reset.

Also, $PATCH and $TMPDIR weren't defined on my system anyway...

The discussion about "patch" referred to the program /usr/bin/patch, not to an environment variable.

TMPDIR is apparently not defined by default in the Windows environment, so it will usually be undefined unless the user has defined it. I think it should therefore be left alone.

The proposal, then, is simply to unset TMP and TEMP in the skel .bashrc file. There should be some sort of comment for the sake of users who want those variables to be set for whatever reason. Here's one possibility, but it may be a little too verbose:

# TMP and TEMP are defined in the Windows environment.  Leaving
# them set to the default Windows temporary directory can have
# unexpected consequences.
unset TMP
unset TEMP

# Alternatively, set them to the Cygwin temporary directory
# export TMP=/tmp
# export TEMP=/tmp

# Or use TMPDIR instead
# export TMPDIR=/tmp


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