Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)
Answer(s): A,B,C
Which of the following explanations are valid reasons to run a command in the background of your shell?
Answer(s): B
What does the + symbol mean in the following grep regular expression:grep '^d[aei]\+d$' /usr/share/dict/words
Answer(s): A
While editing a file in vi, the file changes due to another process. Without exiting vi, how can the file be reopened for editing with the new content?
Answer(s): D
You are trying to make a hard link to an ordinary file but ln returns an error. Which of the following could cause this?
Answer(s): E
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