Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

sed 's/bob/Bob/g' letter > newletter

sed '/bob/Bob' letter > newletter

sed s/bob/Bob/ letter < newletter

sed's/bob/Bob' letter > newletter

sed 's/bob/Bob/g' letter > newletter

sed 's/bob, Bob/' letter > newletter

From a Bash shell, which of the following commands directly executes the instruction from the file/usr/local/bin/runme.sh without starting a subshell? (Please select TWO answers.)

/bin/bash /usr/local/bin/runme.sh

Regarding the command: nice -5 /usr/bin/prog Which of the following statements is correct?

/usr/bin/prog is executed with a nice level of 5.

/usr/bin/prog is executed with a nice level of -5.

/usr/bin/prog is executed with a nice level of 5.

/usr/bin/prog is executed with a priority of -5.

/usr/bin/prog is executed with a priority of 5.

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

vi starts in command mode and opens a new empty file.

vi starts and loads the last file used andmoves the cursor to the position where vi was when it last exited.

vi starts and requires the user to explicitly either create a new or load an existing file.

vi exits with an error message as it cannot be invoked without a file name to operate on.

vi starts in command mode and opens a new empty file.

vi starts and opens a new file which is filled with the content of the vi buffer if the buffer contains text.

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 -path /tmp -user root -print

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

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

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.

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

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

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.

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.

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

The source and the target are on different filesystems.

The source file is a shell script.

You do not own the source file.

The source and the target are on different filesystems.

After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?

foo would be removed while bar would remain accessible.

foo and bar would both be removed.

foo would be removed while bar would remain accessible.

foo would be removed. bar would still exist but would be unusable.

Both foo and bar would remain accessible.

The user is prompted whether bar should be removed, too.

After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)

By creating a symbolic link from the old to the new path of the data.

By mounting the new filesystem on the original path of the data.

By creating an ACL redirection from the old to the new path of the data.

By creatinga hard link from the old to the new path of the data.

By creating a symbolic link from the old to the new path of the data.

By running the command touch on the old path.

By mounting the new filesystem on the original path of the data.

What does the command mount -a do?

It ensuresthat all file systems listed with the option auto in /etc/fstab are mounted.

It ensures that all file systems listed with the option noauto in /etc/fstab are mounted.

It shows all mounted file systems that have been automatically mounted.

It opens an editor with root privileges and loads /etc/fstab for editing.

It ensuresthat all file systems listed with the option auto in /etc/fstab are mounted.

It ensures that all file systems listed in /etc/fstab are mounted regardless of their options.

LPI 101-500 Practice Test 3 - Free Online Exam Questions 81-120

Which of the following commands displays the contents of a gzip compressed tar archive?

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LPI 101-500 Practice Test 3

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