SHELL

terminal command to create new file

touch filename.txt

create new file terminal

touch filename.extension

create new file in terminal

To create a new folder/directory
mkdir foldername

To view the contents of your folder
cd foldername -- to get inside the folder
then
ls or dir -- to view contents of the folder

To create a new file 
touch example.txt -- filename and extension eg .js .html .txt 

how to create new file through terminal

touch bar.txt