Listing
- 
2. ListingNow try to List the Directory’s Contents 
 To List the Directory you are in execute:ls . The “.” is optional and meaning the Location you are in. 
 [See how the Command “ls” is just an Abbreviation for Listing!]
 The default Location each time you open a New Terminal Window is the Home Folder.
 So the Output of the Command should be very similar to this:Desktop/ Downloads/ Pictures/ tmp/ Documents/ Music/ Templates/ Videos/ Here the Entities with a Trailing Slash are Directories. 
 Again to List the Downloads Folder inside on your Home, run:ls ~/Downloads Or also: ls $HOME/Downloads Where “$HOME” is an Environment Variable always containing your User’s Home Path. 
 Next to List the Main System’s Root Directory:
 (The Root of What? Of the System’s Directory Tree. The Trunk, all the other Directories are Branches.)ls / So possibly to List the “usr” Directory: 
 [Again an Abbreviation for “User System Resources“]:ls /usr Finally, to List the “bin” Branch: 
 [Again an Abbreviation for “Binaries” (The Executables)]ls /usr/bin 
Contents
