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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » Two questions about environment variables View 641　Replies 3

Original Poster Posted 2009-09-03 23:02　·　中国广东中山电信

azziporah

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In Vista/7 I see %TEMP% = %USERPROFILE%\AppData\Local\Temp

If the username is very long, for example try_a_very_long_name
then when you output %TEMP% you'll see the username part turn into an 8.3 abbreviated form with "~"
but if you directly echo %username% it is normal. Why is that?

Also, what is %pathtem%?

Floor 2 Posted 2009-09-04 04:31　·　中国陕西西安电信

slore

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My understanding is that standalone username is just the user name, just a string, not a path name, so it won't be expanded according to the 8.3 rule.
That rule applies to paths.

%pathtern%
http://vistaonwindows.com/environment_variables.html

Didn't find any explanation.

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Floor 3 Posted 2009-09-04 04:36　·　中国广东广州电信

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RE the poster above:
What the first post mentioned seems to be %pathtem%, not pathtern

As for pathtem, it might be a temporary path (

I've never used it either. Just guessing, guessing, guessing)

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Floor 4 Posted 2009-09-04 13:52　·　中国广东中山电信

azziporah

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Originally posted by slore at 2009-9-4 04:31:
My understanding is that standalone username is just the user name, just a string, not a path name, so it won't be expanded according to the 8.3 rule.
That rule applies to paths.

%pathtern%
http://vistaonwindo ... But all the other environment variables that represent paths can be displayed in full; only %temp% and %tmp% are exceptions. I don't get it... My system is Windows Vista Home Premium SP1 EN 32-bit The value of %pathtem% is similar to %path%, but not exactly the same I don't know what it is used for

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