How can we change Rscript to execute in 64-bit? The following script prints "i386-apple-darwin9.8.0/i386 (32-bit)" : #!/usr/bin/env Rscript sessionInfo()$platform I want to run RHadoop (rmr2) locally on Mac OS X 10.8.2 (Mountain Lion) but it only works with Rscript in 64-bit mode. -Alton