bryce@bryce-VirtualBox:~/Downloads/emsdk_portable$ ./emsdk activate latest
Writing .emscripten configuration file to user home directory /home/bryce/
The Emscripten configuration file /home/bryce/.emscripten has been rewritten with the following contents:

import os
LLVM_ROOT='/home/bryce/Downloads/emsdk_portable/clang/fastcomp/build_master_64/bin'
NODE_JS='/home/bryce/Downloads/emsdk_portable/node/4.1.1_64bit/bin/node'
EMSCRIPTEN_ROOT='/home/bryce/Downloads/emsdk_portable/emscripten/master'
EMSCRIPTEN_NATIVE_OPTIMIZER='/home/bryce/Downloads/emsdk_portable/emscripten/master_64bit_optimizer/optimizer'
SPIDERMONKEY_ENGINE = ''
V8_ENGINE = ''
TEMP_DIR = '/tmp'
COMPILER_ENGINE = NODE_JS
JS_ENGINES = [NODE_JS]

To conveniently access the selected set of tools from the command line, consider adding the following directories to PATH, or call 'source ./emsdk_env.sh' to do this for you.

   /home/bryce/Downloads/emsdk_portable:/home/bryce/Downloads/emsdk_portable/clang/fastcomp/build_master_64/bin:/home/bryce/Downloads/emsdk_portable/node/