1. Write the command (or commands) that will display the following message 'Hello from the command line.' Ans: echo 'Hello from the command line'
2. Write the command (or commands) that will create a file named 'hello-world.txt'. Ans:touch hello-world.txt
3. Write the command (or commands) that will create a folder named 'my-new-folder' in current directory. Ans: mkdir my-new-folder
4. Write the command (or commands) that will attempt to delete a folder named 'my-nonexistent-folder' and display the following message when the commands fails: 'Whoops, cannot delete a folder that does not exist'. Ans: rmdir my-nonexistent-folder || echo 'Whoops, cannot delete a folder that does not exist'
5. Write the command (or commands) that will navigate to your desktop, and then to the parent folder of the desktop. Ans: cd ..