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From "Laura Stewart" <scotsmat...@gmail.com>
Subject Re: Setting the environment variables for Derby
Date Tue, 03 Apr 2007 16:15:43 GMT
On 3/29/07, John Embretsen <John.Embretsen@sun.com> wrote:
>
> That is correct. The %PATH% syntax is a convenient way to refer to the current
> value of PATH on the command line when you set the new value. This is useful
> because when you use
>
> set PATH=...
>
> you reset the entire PATH variable to whatever is on the right-hand side of the
> equality. If you do an 'echo %PATH%' after setting 'set PATH=whatever;%PATH%'
> you will see that the command shell has expanded %PATH% to whatever value it had
> at that time.
>
> When you use the Control Panel (System Properties) way of setting environment
> variables, the current value is already there, so you simply edit it (add
> whatever you want to add) to get the result you want. I don't think using the
> %variable% syntax even works outside of the command shell.
>
> Some documentation on this (for Win XP) is available at
> http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/path.mspx?mfr=true
> (look for "Using environment variables with Cmd.exe").

Thanks John. I really appreciate the clarification :-)

-- 
Laura Stewart

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