Visual Studio Code

To quickly open the currently directory in VSCode, a very popular Integrated Development Enviroment (IDE), from the terminal we can type

code .

This will display all the files in the current directory in the file explorer on the left side of VSCode. If you would like to only open a specific file, you can type

code <filename>

Sublime Text

If instead you would just like to open the current file in a basic text editor without all the fancy features of an IDE, you can type

subl <filename>

or for some reason you want the current directory to be displayed in the file explorer on the left side of Sublime Text, you can type

subl .