Working with an existing project

use cat > file-name to create a file in bash used in next exercise

useful stuff for exercise:

to create a txt file using command line:

->touch <filename.txt>

to modify the contents of this file :

->vi <filename.txt>

(this opens vim editor)

vim editor commands:

1. "i" - insert command used to insert text
2. "esc" - to come out of insert area
3. ":x!" - to save the file and exit vim