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LPI 101-500 Practice Test - Questions Answers, Page 11

Question list

List of questions

Question 101

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

Question 102

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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.)

Question 103

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

Question 104

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

Question 105

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

Question 106

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Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)

Question 107

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Which of the following explanations are valid reasons to run a command in the background of your shell?

Question 108

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What does the + symbol mean in the following grep regular expression: grep '^d[aei]\+d$' /usr/share/dict/words

Question 109

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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?

Question 110

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You are trying to make a hard link to an ordinary file but ln returns an error. Which of the following could cause this?

Question 101

CORRECT TEXT

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

mkdir,/usr/bin/mkdir

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Question 102

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.)

find /tmp -uid root -print

find -path /tmp -uid root

find /tmp -user root -print

find /tmp -user root

find -path /tmp -user root -print

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Question 103

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

The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

The command sed did not match anything in that file therefore the output is empty.

When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens itfor reading.

Redirection for shell commands do not work using the > character. It only works using the | character instead.

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Question 104

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

cat

foo bar

tee bar

bar

foo

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Question 105

Which of the following commands can be used to determine how long the system has been running?

(Choose TWO correct answers.)

uptime

top

uname -u

time -up

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Question 106

Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)

<<<

>>>

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Question 107

Which of the following explanations are valid reasons to run a command in the background of your shell?

The command does not need to execute immediately.

The command has to run immediately but the user needs to log out.

The system is being shut down and the command needs to restart execution immediately after the reboot.

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Question 108

What does the + symbol mean in the following grep regular expression: grep '^d[aei]\+d$' /usr/share/dict/words

Match the preceding character set ([aei]) one or more times.

Match the preceding character set ([aei]) zero or more times.

Match the preceding character set ([aei]) zero or one times.

Match a literal + symbol.

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Question 109

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?