Listing Commands
ls - list Files
ls -l - list Files with Long List Format
ls -t - list Files with sorting Last Modified time
ls -h - list Files with Human readable format (1000 = 1K)
ls -a - list All Files (hidden included) Hidden Files start with Dot (.) --> e.g: .ssh
ls -laht - list All Files (hidden included) and sort Last Modified time and with Human readable with Long List Format