Terminal commands

cd = to move into a folder

ls =  to list all folders and files in current location

open = type open, then space, then file name to open a file

open -a "Sublime Text" index.html = to open a file with a specific program, type open, then space, then -a, then space, then the name of the program in quotation marks, then space, then the file name.  

touch = create a new file

mkdir = create a new folder

rm = delete a file

rm -r = delete a folder and its contents