Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)

When given the following command line.
echo “foo bar” | tee bar | cat
Which of the following output is created?

When running the command
sed -e “s/a/b/” /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?

Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO
correct answers.)

SIMULATION
Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)

Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?

Which variable defines the directories in which a Bash shell searches for executable commands?

Which of the following command sets the Bash variable named TEST with the content FOO?

What happens after issuing the command vi without any additional parameters?

Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?