Question 1

Which is an extended regular expression metacharacter?

Accepted Answer

{} is an extended regular expression metacharacter that allows specifying a precise number of repetitions of the preceding element. A curly brace enclosed range specifies minimum and maximum number of occurrences while a single curly brace specifies the exact number of occurrences.

Question 2

To move from the /home/joe/test/data to the /home/joe directory, use the ____ command.

Accepted Answer

B

Question 3

The ls ____ command can be used to provide a long listing for each file in a certain directory.

Accepted Answer

The correct option is D because the "-l" option is used with the ls command to provide a long listing for each file in a certain directory. The long listing includes various details about each file, including file permissions, owner, group, size, and modification time.

Question 4

Linux uses a logical directory tree to organize files into different folders.

Accepted Answer

Linux file system uses a logical directory tree structure where all files and directories are organized under the root directory ("/").

Question 5

To display the contents of a file called data, use the command ____.

Accepted Answer

The "cat" command is used to display the contents of a file. The other options (A, B, and C) are not valid commands for displaying file contents.

Question 6

Using wildcard metacharacters, how can one indicate a number is 1 or 2 or 3 or 4?

Accepted Answer

The square brackets indicate a character set, and the range inside the brackets [1-4] includes all numbers between 1 and 4 inclusive. The wildcard metacharacters used with the square brackets allow for any single digit in that range to be matched.

Question 7

Pressing the Esc key at the prompt while using the more command displays a help screen.

Accepted Answer

Pressing the Esc key while using the more command does not display a help screen; it typically has no effect or exits the more command, depending on the system. To get help in more, you usually press h.

Question 8

The ____ metacharacter can also be used to refer to the current user's home directory.

Accepted Answer

The tilde (~) metacharacter is used to refer to the current user's home directory.

Question 9

The more command should not be used on binary files.

Accepted Answer

The more command is used to display the contents of a file on the terminal. It is not recommended to use it on binary files as it may result in distorted output or even corrupt the file. Binary files are encoded in a specific way and cannot be displayed as text files. It is best to use specialized tools to view or manipulate binary files.

Question 10

The ____ editor is distributed with the GNOME environment.

Accepted Answer

gedit is the default text editor for the GNOME environment, so it is the best choice for this question.

Question 11

You may access much of the functionality of ____ by using the function keys on the keyboard as described at the bottom of the screen.

Accepted Answer

The function keys at the bottom of the screen are a characteristic feature of mcedit, which is the text editor component of the Midnight Commander file manager.

Question 12

The ____ can be used with LISP artificial intelligence programming language and supports hundreds of keyboard functions like the vi editor.

Accepted Answer

Emacs editor is a popular choice for LISP artificial intelligence programming language and supports hundreds of keyboard functions like the vi editor. The other options, kedit editor, mcedit editor, and nedit editor, may not have the same level of support for LISP or keyboard functions specific to AI programming.

Question 13

A linked file is followed by a(n)____.

Accepted Answer

A linked file is typically followed by the "@" symbol, indicating that it is a hyperlink to another location. The other symbols listed are not typically used in this context.

Question 14

The command strings /bin/echo displays the binary characters inside the /bin/echo binary executable program.

Accepted Answer

The command strings /bin/echo displays the printable strings from the /bin/echo binary executable program, not the binary characters.

Question 15

The ____ command will confirm the directory that you are currently in on the system.

Accepted Answer

The "pwd" command (print working directory) is used to confirm the directory that the user is currently in on the system. The "dir" command is used in Windows to list the contents of a directory, "whereami" is not a valid command, and "ld" is a command used for linking object files to create an executable program on Unix/Linux systems.

Question 16

To view a list of files and their type, use the ____ switch to the ls command.

Accepted Answer

The answer of To view a list of files and...

Question 17

The ____ command displays the last 10 lines of a text file.

Accepted Answer

The "tail" command displays the last lines of a text file. By default, it displays the last 10 lines.

Question 18

Most files on a Linux system that contain configuration information are ____ files.

Accepted Answer

Configuration files on Linux systems are typically stored as text files. This allows them to be easily read and modified with a text editor. While some configuration files may be stored in other formats (such as XML or YAML), text files are the most common.

Question 19

Your current directory is /home, and the contents of the directory are fred, john, and steve. If you type the command cd /home/s and then press the ____ key, the command cd /home/steve will be displayed on the terminal screen.

Accepted Answer

Pressing the Tab key autocompletes the directory name "s" to "steve", allowing the user to quickly navigate to the desired directory without having to type out the full name.

Question 20

It is acceptable to use shell metacharacters when naming files.

Accepted Answer

Using shell metacharacters in file names can cause errors and unexpected behavior when performing operations on those files, as the shell may interpret the metacharacters as commands or operators. It is best practice to use only alphanumeric characters, underscores, and hyphens when naming files.

Quiz 4: Exploring Linux Filesystems