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Question: Write the name of the standard subdirectory of the root directory which contains references and files for the devices.

Your answer: dev

Correct answer: /dev

Edit: Also

Question: Write the command that shows a text 'hello world' in the console without moving to a new line after executing the command

Your answer: printf '%s' 'hello world'

Correct answer: echo -n 'hello world'

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I also got a similar result with this: Question: Write the command that reads the file that has the name (text.txt) and shows only one page each time you hit space and it allows you to explore the file back and forward.

Your answer: less test.txt

Correct answer: less text.txt

echo -n hello world considered wrong as well.

Also

Question: Write the command that you use if you finish working with the terminal and you want to log out from the current session.

Your answer:logout

Correct answer:exit

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