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I'm trying to get LinkSnooper up and working on a Windows 7 machine to monitor the interaction between the Mathematica front end and MathLink. I'm facing great troubles following the instructions here. Namely, my arguments to MLOpen are as follows:

-LinkMode Launch -LinkName "'C:/Program Files/Wolfram Research/Mathematica/9.0/SystemFiles/Java/Windows-x86-64/javaw' -classpath \"C:/Program Files/Wolfram Research/Mathematica/9.0/SystemFiles/Links/JLink/JLink.jar\" com.wolfram.jlink.util.LinkSnooper -kernelname 'C:/Program Files/Wolfram Research/Mathematica/9.0/mathkernel.exe'"

and when loading the kernel, a file system browser pops up and asks me to select a MathLink program to run. Anyone got this working on a windows machine and perhaps have some suggestions?

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1 Answer 1

up vote 6 down vote accepted

One problem is that your path to javaw is wrong (you forgot the bin dir). But that quoting style is very hard to make work, and possibly flat-out wrong (I swear that example in the documentation worked about nine years ago when I wrote it, but I cannot seem to make anything like it work now; my apologies).

The correct way is to invert your single and double quotes, meaning use a single quote around the whole outer -LinkName part, and then use unescaped double quotes for pathnames within it. Like this:

-LinkMode Launch -LinkName '"C:/Program Files/Wolfram Research/Mathematica/9.0/SystemFiles/Java/Windows-x86-64/bin/javaw.exe" -classpath "C:/Program Files/Wolfram Research/Mathematica/9.0/SystemFiles/Links/JLink/JLink.jar" com.wolfram.jlink.util.LinkSnooper -kernelname "C:/Program Files/Wolfram Research/Mathematica/9.0/mathkernel.exe"'
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