File Management Flashcards

Question

"rd" command

Answer 1

Use the rd command to delete (remove) a directory. Common switches used with **rd** are: * **rd [*directory*]** removes the specified directory within the current directory. * **rd [*path*] [*directory*]** removes the directory specified in the path. * **rd /s** removes subdirectories in addition to files in the current directory. **rd /q** will not prompt you before each deletion

Answer 2

Use the **copy** command to copy files from one location to another. Common switches used with **copy** are: * **copy *[source] [destination]*** copies the specified file to the new location. * **copy *[folder] [\*.\*] [path] [destination]*** copies all files with extensions in a folder to the new location. * **copy /a** specifies that the file is an ASCII text file. * **copy /b** specifies that the file is a binary file. * **copy /n** copies files using short filenames. * **copy /y** will not prompt you before each overwrite operation. * **copy /v** verifies files after they are copied. Be aware of the following for how moving (copying) files between partitions affects the file attributes: * When copying files from a FAT32 partition to another partition, the file attributes are retained. When copying files from an NTFS partition to a FAT32 partition, attributes such as encryption and permissions that are not available in FAT32 are removed

Answer 3

Use the **xcopy** command to copy files and directory trees. Common switches used with **xcopy** are: * **xcopy /a** copies files with the archive attribute set and doesn't change the attribute. * **xcopy /m** copies files with the archive attribute set and turns off the archive attribute. * **xcopy /d** copies files changed on or after the specified date. If no date is given, it copies only those files whose source time is newer than the destination time. * **xcopy /p** prompts you before creating each destination file. * **xcopy /s** copies directories and subdirectories (except empty ones). * **xcopy /e** copies directories and subdirectories, including empty ones. * **xcopy /h** copies hidden and system files also. * **xcopy /r** overwrites read-only files. * **xcopy /k** copies attributes. Normal **xcopy** will reset read-only attributes. **xcopy /y** overwrites existing files without prompting

Answer 4

The **robocopy** command (short for Robust File Copy) is used to copy entire folder structures between volumes or across a network. The benefit of using **robocopy** is that all NTFS file permissions and attributes are maintained and interrupted transfers can be resumed. Common switches used with **robocopy** uses the following are: * **robocopy *[source\_folder]* *[destination]* *[options]* copies** entire folder structures to destination. * **robocopy /s** copies subdirectories, excluding empty directories * **robocopy /e** copies subdirectories, including empty directories * **robocopy /mov** moves all specified files and directories, and deletes them from the source when complete * **robocopy /copyall** copies all files attributes and information RoboCopy is a very powerful copy utility and should be used only if you fully understand how to use it

Answer 5

Use the **edit** command to view, create, or modify files. Common switches used with **edit** are: * **edit *[file]*** specifies initial files(s) to load. Wildcards and multiple file specs can be given. **edit /r** load file(s) in read-only mode

Answer 6

Use the **attrib** command to change or view the attributes of one or more files. * Use the **attrib** command by itself to display a list of all files in the current directory. * Attributes that can be set or removed are identified by the attribute letter: * **R** = read-only * **A** = archive * **S** = system * **H** = hidden * **I** = not indexed You cannot encrypt files using the **attrib** command. Instead, use the **cipher** command or edit the properties of the file. * Use **attrib +** to add an attribute to a file. For example, the following command sets the R attribute for the myfile.txt file: **attrib +r myfile.txt.** * Use **attrib -** to remove an attribute from a file. For example, the following command removes the R attribute from a file: **attrib -r myfile.txt.** Multiple attributes can be assigned or removed at a time. For example, the following command assigns both R and S attributes to the file: **attrib +r +s myfile.txt**. You can also change attributes by right-clicking a file and selecting **Properties** from the menu

Answer 7

Use the **del** command to delete one or more files on the system. Common switches used with **del** are: * **del *[file]*** specifies the file to delete. Wildcards and multiple filenames can be given. **del /p** prompts for confirmation before deleting the specified file(s).

Answer 8

With NTFS permissions, each file and folder has an access control list (ACL). The ACL identifies the users or groups and their level of access to the folder or file

Answer 9

**Permission** **Allowed Actions** Read View folder details and attributes. View file attributes; open a file. Write Change folder or file data and attributes. List Folder Contents Includes all Read actions and adds the ability to view a folder's contents. Read & Execute Includes all Read actions and adds the ability to run programs. Modify Includes all Read & Execute and Write actions and adds the ability to add or delete files. Full Control Includes all other actions and adds the ability to take ownership of and change permissions on the folder.

Answer 10

Be aware of the following facts about NTFS permissions: * When possible, assign permissions to groups rather than individual users. * Permissions are cumulative. Users gain the sum of all permissions granted to the user account and any groups. * Permissions can be allowed or denied. Denied permissions always override allowed permissions. For example, if a user belongs to two groups, and a specific permission is allowed for one group and denied for the other, the permission is denied. * In addition to the standard permissions, there are special permissions that offer finer control over the actions that can be performed on the file or the folder. * By default, users have Full Control permissions to all files in their user profile. No other users can access files in the user profile. NTFS permissions control access for logged on users as well as users who access files through a network connection

Answer 11

* Every object, including files and folders, has an owner. * The owner is typically the user who created the file. * The owner has full control over the file and can assign permissions to the file. * Administrators have the Take Ownership right to all objects. Administrators can assign ownership of a file or folder even if they do not have permissions to access the file. * You can reassign ownership of a file or folder to easily give a user all permissions. You might reassign ownership when someone leaves your organization. * If you cannot access a file because of insufficient permissions, take ownership of the file and modify the permissions

Answer 12

* You must have the proper permissions to copy or move a folder or a file: * To copy a file or folder, you must have the Read permission to the source file and the Write permission to the destination location. * To move a file or folder, you must have Read and Modify permissions to the source file, and the Write permission to the destination location. * If you copy or move a file to a non-NTFS partition, all permissions are removed. * In all cases, if you copy or move a file to an NTFS partition, it will inherit the permissions assigned to the parent partition and folders. * If a file has explicit NTFS permissions assigned to that file: * If you copy or move the file to a different NTFS partition, the explicit permissions will be removed. * If you move the file to a different folder on the same NTFS partition, the explicit permissions will be kept. * If you copy the file to a different folder on the same NTFS partition, the explicit permissions will be removed. In all cases, the file will also inherit permissions from its new partition and folder

Answer 13

A shared folder is a set of files that are made available over the network to other users. Users can access the files through a network connection instead of having to log on locally to the computer

Answer 14

* Manually share a folder * Share the Public folder on the network. You can choose to allow all users to read documents, or to read and modify documents in the Public folder. If the Public folder is not shared, locally logged on users will still have access to the Public folder. * Share your own media files. When you choose to share your media files: * Network users are given read access to the Pictures, Music, and Videos folders in your user profile. * Media is streamed to the other computers, but files cannot be copied. You can customize which computers have access, as well as the file types which you want to share

Answer 15

**Simple sharing permission** **Advanced sharing permission** **Allowed actions** Read Read Browse the shared folder and its files Open files in the shared folder and its subfolders Copy files from the shared folder Run programs Read/Write Change All Read actions (browse, open files, copy files from the folder, run programs) Write to files and change file attributes Create new files and subfolders Copy files to the shared folder Delete files or subfolders Full Control All Read and Change actions Configure share permissions

Answer 16

Be aware of the following when sharing files: * You must explicitly enable file sharing before network users can access shared folders. When you share a folder for the first time, you are asked whether you want to enable file sharing. * To switch between simple and advanced sharing, select **Advanced Sharing**. * Use the following tools to manually share a folder: * Shared Folder snap-in in Computer Management * Edit the properties for the folder in Windows Explorer Use the Network and Sharing Center to enable Public folder sharing or media sharing. * When you share a folder, you give it a name. The share name is not the same as the folder name, although they can be the same. * To access a shared folder on the network, * Use the UNC path to the shared folder with the following syntax: **\\computername\sharename**. * Use the Network feature to browse the network for the computer and view any shared folders on that computer. * Use the **net use** command to map a drive letter to the shared folder. * **net use** by itself lists the current connected shared folders and drive letters. * **net use F: \\Wrk1\shared2** maps drive letter F: to a specific shared folder. * **net use \* \\Wrk1\shared2** maps the next available drive letter to the shared folder. * The **/persistent:yes** switch reconnects the connection at each subsequent logon; **/persistent:no** makes the mapping temporary * **net use /?** or **net use ?** lists the valid parameters for the net use command. * Adding a dollar sign ($) to the end of a share name creates an administrative share. * Administrative shares are not visible when browsing the network. You must use the UNC path to connect to an administrative share. * By default, Windows automatically creates an administrative share for every volume, with the share name being the volume letter plus the dollar sign (such as C$). * Default administrative shares can be accessed only by a member of the Administrators group. Configure share permissions to control access to administrative shares you create yourself.. * Your computer must be turned on (and be awake) before users can access the shared folder. * Network acts as a built-in network browser showing all networks and shared folders to which the user has access. This same information can be viewed in This PC and File Explorer

Answer 17

The Second Extended File System (ext2) is one of the oldest Linux file systems still available. * ext2 stores data in a standard directory and file hierarchy. * The maximum file size supported is 2 TB. * An ext2 volume can be up to 4 TB in size. * File names can be up to 255 characters long. * Linux users, groups, and permissions are supported. It does not use journaling (which is used in most modern file systems). As a result, ext2 takes a long time to recover if the system shuts down abruptly

Answer 18

The Third Extended File System (ext3) is an updated version of ext2 that supports journaling. Before committing a transaction to a storage device, the ext3 file system records the transaction to the journal and marks it as incomplete. After the disk transaction is complete, the file system marks the transaction as complete in the journal. By doing this, ext3 can keep track of the most recent file transactions and whether or not they were completed. This allows ext3 to recover much more quickly than ext2 in the event of an unclean system shutdown

Answer 19

The Reiser file system (ReiserFS) is an alternative to the ext3 file system. Like ext3, Reiser uses journaling to make crash recovery very fast. However, Reiser is a completely different file system from ext2 and ext3, using a dramatically different internal structure. ReiserFS supports a maximum file size of 8 TB and maximum volume size of 16 TB. In addition, the structure of Reiser allows it to perform much faster than ext2 or ext3

Answer 20

ext4 is the fourth generation file system in the ext file system family. ext4 includes all of the features found with ext2 and ext3, with the addition of the following features: * Support for file sizes up to 16 TB and disk sizes up to 1 exabyte (EB) * Allows for up to four billion files in the file system * Uses checksums to verify the integrity of the journal file itself Checksums help improve the overall reliability of the system because the journal file is the most heavily used file of the disk

Answer 21

A swap file system is used as virtual memory (the portion of the hard disk used to temporarily store portions of main memory) by the operating system. A recommended practice is to make the swap file size between 1 and 1.5 times the amount of memory on the computer

Answer 22

CDfs is a virtual Linux file system that provides access to individual data and audio tracks on compact discs (CDs). A compact disc mounted with the "CDfs" driver appears as a collection of files, each representing a single track

Answer 23

Network File System (NFS) is a distributed file system protocol that allows a user on a client computer to access files over a computer network much like local storage is accessed

Answer 24

Microsoft operating systems use NTFS (New Technology File System). Linux provides limited support for NTFS

Answer 25

VFAT is a FAT32 file system for Linux and does not support journaling. VFAT includes long name support. Support for VFAT must be compiled into the kernel for the system to recognize the VFAT format

Answer 26

The XFS file system was developed for the Silicon Graphics IRIX operating system. An XFS file system is proficient at handling large files, offers smooth data transfers, and provides journaling. It also can reside on a regular disk partition or on a logical volume

Answer 27

Btrfs is a Linux file system that uses a *copy-on-write* file system. Using copy-on-write technology, Btrfs provides several key features not found in earlier file systems: * **Storage pools** - Instead of using traditional disk partitions, Btrfs allows you to create *storage pools* from the storage devices in your system. From the storage pool, you can then allocate space to specific *storage volumes*. Instead of mounting partitions, you mount storage volumes at mount points in the file system. **Snapshots** - The snapshot functionality provided by Btrfs protects data. It can be configured to take snapshots of your data at specified intervals and save it on separate media. If a file ever gets lost or corrupted, you can restore a previous version of the file from a snapshot

Answer 28

Displays the current directory on the screen

Answer 29

Displays a list of files and subdirectories that exist within a directory. Some options commonly used with the ls command include the following: * **-a** displays all files, including hidden files. * **-l** displays a detailed (long) listing of directory contents including ownership, permissions, modification dates, and file sizes. **-R** displays the contents of the directory as well as all of its subdirectories

Answer 30

Changes directories in the file system. For example, to change to the /home directory in the file system, you would enter cd /home at the shell prompt

Answer 31

Copies files and directories from one location in the file system to another. For example, to copy the widget.odt file to the /home/rtracy directory, you would enter **cp widget.odt /home/rtracy** at the shell prompt. To copy an entire directory structure, include the **-R** option, which specifies that the directory contents be recursively copied

Answer 32

Moves files and directories from one location in the file system to another. For example, to move the widget.odt file to the /home/rtracy directory, you would enter mv widget.odt /home/rtracy at the shell prompt

Answer 33

Deletes files and directories from the file system. For example, to delete the widget.odt file, you would enter rm widget.odt at the shell prompt

Answer 34

Displays the contents of a text file on the screen. For example, to view the contents of the widget.txt file, you would enter cat widget.txt at the shell prompt

Answer 35

Displays the contents of a text file on the screen, pausing the output one screen at a time. For example, to view the contents of the widget.txt file one page at a time, you would enter less widget.txt at the shell prompt

Answer 36

Displays the first few lines of a text file on the screen. For example, to view the first lines of the widget.txt file, you would enter head widget.txt at the shell prompt

Answer 37

Displays the last few lines of a text file on the screen. For example, to view the last lines of the widget.txt file, you would enter **tail widget.txt** at the shell prompt. The **-f** option can be used with tail to monitor a file for changes. If new content is added to the end of the file (such as a log file), the new lines will be displayed on the screen

Answer 38

Edits the contents of a text file. The vi command uses four different operating modes: * Command mode * Command-line mode * Insert mode * Replace mode For example, to edit the contents of the widget.txt file, you would enter **vi widget.txt** at the shell prompt. You would then press the **Ins** key to enter Insert mode and make the necessary changes to the file. When done editing the file, you would press the **Esc** key to enter Command mode. The you would press the **:** key to enter command-line mode where you would enter **exit** to save your changes and exit the vi editor

Answer 39

Allows you to switch user accounts. **su -** (su with a space and a hyphen) is used to switch to the root user with the home directory and environment variables assigned to the root user

Answer 40

Changes the user or group that owns a file or directory. For example, to change the owner of the widget.txt file to the ksanders user, you would enter **chown ksanders widget.txt**

Answer 41

Changes the group that owns a file or directory. For example, to change the group that owns the widget.txt file to the RandD group, you would enter **chgrp RandD widget.txt**.

Answer 42

Changes the permissions assigned to three file system entities: * **Owner**: This is the user account that has been assigned to be the file or directory's owner. Permissions assigned to the owner apply only to that user account. * **Group**: This is the group that has been assigned ownership of the file or directory. Permissions assigned to the group apply to all user accounts that are members of that group. * **Others**: Identifies all other users who have successfully authenticated to the system. Permissions assigned to this entity apply to these user accounts. Files and folders in the Linux file system can be assigned one or more of the following permissions: * **Read**: Allows a file to be opened and viewed. Allows the contents of a directory to be listed. This permission is represented by a numeric value of **4**. * **Write**: Allows a file to be changed. Allows files to be added or deleted from a directory. This permission is represented by a numeric value of **2**. * **Execute**: Allows an executable file to be run. Allows a directory to be entered. This permission is represented by a numeric value of **1**. There are several different ways the chmod command can be used to modify the permissions assigned to a file or directory: * Enter **chmod *entity*=*permissions* *filename***. Substitute **u** for Owner, **g** for Group, and **o** for Others in the *entity* portion of the command. Substitute **r**, **w**, and/or **x** for the *permissions* portion of the command. * Enter **chmod *entity*+/-*permission* *filename***. Substitute **u** for Owner, **g** for Group, and **o** for Others in the *entity* portion of the command. Substitute **r**, **w**, and/or **x** for the *permissions* portion of the command. * Enter **chmod *3-digit\_numeric\_permission filename***. The first digit assigns permissions to Owner, the second to Group, and the third to Others.

Answer 43

Copies file system data using records. It can copy files, directories, partitions, or even entire hard disks. For example to copy a disk partition to a file on a removable USB drive, you would enter **dd if=/dev/sdb1 of=/media/usb/partition.bak**

Answer 44

The **shutdown** command brings the system down or reboots the system in a secure manner. The syntax of the shutdown command is **shutdown +m -h|-r message**. The options for the shutdown command include: * **+m** specifies when to perform the shutdown operation. The amount of time is specified in minutes. * **-h** instructs the system to shut down and power down. * **-r** instructs the system to reboot after the shutdown. **message** specifies a message that is sent to all users that accompanies the standard shutdown notification

File Management Flashcards

(68 cards)