If your operating system shell provides a graphical user interface, you just
have to double-click the commandline.bat or commandline.sh file (according to your OS) to
run the CommandLine. If your operating system shell provides a command-line interface,
switch to the CommandLine path and enter the command:
./commandline-linux.sh to run the CommandLine.
To switch between the different operating modes and execute any command, you can either edit the commandline file if you are using a graphical shell or you can do it directly from the command-line if you are using a command-line shell.