if [ ! -e /Users/jietang/Projects/doom-py/doom_py/src/vizdoom/../../bin/vizdoom ]; then ln -sf /Users/jietang/Projects/doom-py/doom_py/src/vizdoom/src/vizdoom /Users/jietang/Projects/doom-py/doom_py/src/vizdoom/../../bin/vizdoom; fi