how to start command line in vs code code example

Example 1: open visual studio code from terminal mac

#Add Bash alias in .bash_profile ?
$ alias code="open -a /Applications/Visual\ Studio\ Code.app"

#Open Visual Studio Code by command
$ code .

Example 2: vscode install-extension command line

code --list-extensions
code --install-extension ms-vscode.cpptools
code --uninstall-extension ms-vscode.csharp