What does the .. do in the statement -D BUILD_EXAMPLES=ON ../opencv

cmake -D CMAKE_BUILD_TYPE=RELEASE
-D CMAKE_INSTALL_PREFIX=/usr/local
-D INSTALL_PYTHON_EXAMPLES=ON
-D INSTALL_C_EXAMPLES=OFF
-D OPENCV_ENABLE_NONFREE=ON
# Contrib path
-D OPENCV_EXTRA_MODULES_PATH=~/projects/cv2/opencv_contrib/modules
# Your virtual environment’s Python executable
# You need to specify the result of echo $(which python)
-D PYTHON_EXECUTABLE=~/env/bin/python
-D BUILD_EXAMPLES=ON …/opencv

I get an error message on the last statement saying “source directory does not exist”. What should be put in the place of the two …/opencv?

When I tried the command echo $(which python), I received the message “/home/jetson/env/bin/python”.
I then type the statement
-D BUILD_EXAMPLES=ON /home/jetson/env/bin/python/opencv

And received the message “The source directory /home/jetson/env/bin/python/opencv” does not exist. Thoughts??