Sec. 6: Directories and Files

Linux is a _____________ system.

• Multi operating

• Single user

• Multiuser

• Super user

Answer explanation

An operating system is considered "multi-user" is if allows multiple people to use a computer and not affect each other's 'stuff' (files, preferences, etc.). In Linux, multiple people can even use the computer simultaneously.

The superuser or administrator, is traditionally called ______ in Linux.

• Toor

• Root

• admin

• su

Answer explanation

Root is the user name or account that by default has access to all commands and files on a Linux or other Unix-like operating system. It is also referred to as the root account, root user and the superuser.

Linux does not use drive letters as Windows does.

• True

• False

Answer explanation

True, Linux instead uses the root of the filesystem, known as the forward slash (/).

Which of the following statements is FALSE?

• A difference between Windows and Linux is the concept of mounting and unmounting partitions, drives or directories in Linux.

• Linux distinguishes between uppercase and lowercase letters in the file system.

• As opposed to Windows, files in Linux may have a file extension, such as .txt, but do not need to have one.

• Hidden files start with a pound/hashtag.

Answer explanation

The hashtag or pound symbol (#) is used to comment an entire line in a bash script.

The "cd" command is short for _____________.

• Check directory

• Change directory

• Change disk

• Check disk

Answer explanation

The cd command is one of the most basic and frequently used commands when working on the Linux command line. The cd command, which stands for “change directory” is used to change the current working directory in Linux and other Unix-like operating systems.

In Linux, a dash (-) serves as a “quote” or “escape” character to enter otherwise hard-to-specify characters, such as spaces, as part of a filename.

• True

• False

Answer explanation

A backslash (\) can be used to quote or escape the special meaning of a character in Linux.

This command which is short for copy, copies files.

• mv

• cpy

• cp

• mve

Answer explanation

This command is used to copy files or group of files or directory. It creates an exact image of a file on a disk with different file name. cp command require at least two filenames in its arguments.

Linux supports two types of links, ______ and _________, both of which are created with the ln command.

• Hard and symbolic

• Hard and soft

• Dynamic and static

• Dynamic and symbolic

Answer explanation

A hard link is a file that points to the same underlying inode, as another file. In case you delete one file, it removes one link to the underlying inode. Whereas a symbolic link (also known as soft link) is a link to another filename in the filesystem.

One characteristic of Linux that sets it apart from other OS is that its native filesystems are case-sensitive.

• True

• False

Answer explanation

True. Linux filesystems, unlike FAT-32 or NTFS, are case sensitive. this means that file.txt is not the same file as File.txt.

This is similar to using the right-click mouse button and selecting New Folder in a Windows desktop.

• Typing “mk newfolder”

• Typing “mkdir newfolder”

• Typing “newdir folder”

• Typing “new folder”

Answer explanation

To create a new folder in the Linux shell, you simply need to type “mkdir newfolder” to create a new folder called “newfolder”.