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→Step 4: Check for current probes
This command will output all currently running scripts matching this naming convention. It will only display probes that are currently running, so firefox must be running in order for this command to output. The output should look something like this (Provider ID may be different):
<codepre>
ID PROVIDER MODULE FUNCTION NAME
20925 javascript333 libmozjs.dylib js_Interpret function-args<br>
20933 javascript333 libmozjs.dylib js_Interpret function-rval<br>
20934 javascript333 libmozjs.dylib jsdtrace_function_rval function-rval<br>
</codepre>
javascript333 is the unique provider for the probes. 333 is required in case you have 2 programs running that use D-Tracing (replacing the * with the number helps limit your script). libmozjs.dylib is the Mozilla module that has the definition of these probes. Each probe has 5 categories split into 2 functions - the function itself and the interpreter.