If you did not check to add the installation path to your system environment variables when installing Anaconda, you can do so manually by following these steps:
Open Anaconda Prompt(Windows) or terminal(Mac/Linux).
Enter the following command, where "anaconda_path" is replaced by your Anaconda installation path:
Windows: setx PATH "%PATH%; anaconda_path"
Mac/Linux: export PATH="anaconda_path:$PATH"
Close and reopen the command line window to update the environment variables.
You should now be able to access all of Anaconda's led programs and libraries from the command line.