Best way to find Environment TEMP

coldmiser has asked for the wisdom of the Perl Monks concerning the following question:

OK, I've got a bit of code that I don't understand what it's doing. I'm trying to find Environment temp. Now, on different computers they may or may not have some environment variables assigned so I wanted to cover my bases. I created this code:

$TempPath = $ENV{TMP} | $ENV{TEMP} | "$ENV{SYSTEMROOT}.\TEMP";
[download]

Unfortunately, all it returns is rubbish in this case:

$TempPath = C:\WOO_]o~u]STEVE~1.JON\LOCALS~1\Temp
[download]

When in reality $ENV{TMP} = C:\DOCUME~1\STEVE~1.JON\LOCALS~1\Temp
Can anyone explain to me how my first subdirectory got FUBARed?

Comment on Best way to find Environment TEMP Select or Download Code

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Re: Best way to find Environment TEMP by FunkyMonk (Bishop) on Jun 11, 2007 at 19:36 UTC
$TempPath = $ENV{TMP} \| $ENV{TEMP} \| "$ENV{SYSTEMROOT}.\TEMP"; You want logical-or ("`\|\|`") not bitwise-or ("`\|`"). `$TempPath = $ENV{TMP} \|\| $ENV{TEMP} \|\| "$ENV{SYSTEMROOT}.\TEMP";` [download] See perlop for the reasons why.	[reply] [d/l] [select]
Re^2: Best way to find Environment TEMP by coldmiser (Hermit) on Jun 11, 2007 at 19:39 UTC
Thank you, that was it.	[reply]
Re: Best way to find Environment TEMP by tinita (Parson) on Jun 11, 2007 at 21:18 UTC
have you considered File::Temp?	[reply]
Re^2: Best way to find Environment TEMP by blazar (Canon) on Jun 12, 2007 at 15:24 UTC
have you considered File::Temp? Quite a precious module but aimed at a task that's likely to be orthogonal to the OP's. In fact he may even want to use his `$TempPath` in conjunction with F::T to create temporary files there. Of course File::Spec's `tmpdir()` gets closer to the original task and F::T uses it behind the curtains for reasonable defaults.	[reply] [d/l] [select]