I tend to use User Interfaces as much as possible because i like them and i like to built them. Nevertheless i am finding myself more and more working on the command line.
Since i never start a project again without build-tools like grunt or gulp or package managers like bower or composer and favoriting a vagrant i spent a lot of time during the development on the terminal.
In some cases you just want to open a file in the current directory e.g. previewing an image or open a HTML file in the browser. Just type
to open a file with the registered default program for this filetype.
You can also specify the program you want to use for opening the file. In case Chrome is your default browser but you want to open a HTML file in Safari type
open -a Safari index.html
Opening an URL is as simple
To open a directory in Finder type
to open the current folder or specify the folder you want to open
Opening a file from the command line is as we can see as simple as it should be.