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In addition to the tools installed with  XP, there are over 40 support tools included on the  XP CD. You can use these tools to diagnose and resolve computer problems. For more information about these support tools, see Windows Support Tools For information about installing support tools, see Install Windows Support Tools

For more information about changes to the functionality of MS-DOS commands, new command-line tools, command shell functionality, configuring the command prompt, and automating commmand-line tasks, seeCommand-line reference

Some command-line tools require the user to have administrator-level privileges on source and/or target computers.

Command-line tools must be run at the prompt of the Cmd.exe command interpreter. To open Command Prompt, click Start, click Run, type cmd, and then click OK. To view help at the command-line, at the command prompt, type the following:

CommandName  /?

A

Displays and modifies entries in the Address Resolution Protocol (ARP) , which contains one or more tables that are used to store IP addresses and their resolved Ethernet or Token Ring physical addresses. There is a separate table for each Ethernet or Token Ring network adapter installed on your computer. Used without parameters, arp displays help.
Displays or modifies file name extension associations. Used without parameters, assoc displays a list of all the current file name extension associations.
Schedules commands and programs to run on a computer at a specified time and date. You can use at only when the Schedule service is running. Used without parameters, at lists scheduled commands.
Schedules commands and programs to run on a computer at a specified time and date. You can use at only when the Schedule service is running. Used without parameters, at lists scheduled commands.
Displays, sets, or removes the read-only, archive, system, and hidden attributes assigned to files or directories. Used without parameters, attrib displays attributes of all files in the current directory.

B

With batch files, which are also called batch programs or scripts, you can simplify routine or repetitive tasks. A batch file is an unformatted text file that contains one or more commands and has a .bat or .cmd file name extension. When you type the file name at the command prompt, Cmd.exe runs the commands sequentially as they appear in the file.You can include any command in a batch file. Certain commands, such as forgoto, and if, enable you to do conditional processing of the commands in the batch file. For example, the if command carries out a command based on the results of a condition. Other commands allow you to control input and output and call other batch files.The standard error codes that most applications return are 0 if no error occurred and 1 (or higher value) if an error occurred. Please refer to your application help documentation to determine the meaning of specific error codes.

 

Configures, queries, or changes Boot.ini file settings.
Windows XP does not use this command. It is accepted only for compatibility with MS-DOS files.

C

Displays or modifies discretionary access control list (DACL) files.
Calls one batch program from another without stopping the parent batch program. The call command accepts labels as the target of the call. Call has no effect at the command-line when used outside of a script or batch file.
For more information about the Terminal Services change commands, see the following topics:

Displays the number of the active console code page, or changes the console’s active console code page. Used without parameters, chcp displays the number of the active console code page.
Displays the name of the current directory or changes the current folder. Used with only a drive letter (for example, chdir C:), chdir displays the names of the current drive and folder. Used without parameters, chdir displays the current drive and directory.
Creates and displays a status report for a disk based on the file system. Chkdsk also lists and corrects errors on the disk. Used without parameters, chkdsk displays the status of the disk in the current drive.
Displays or specifies whether automatic system checking is scheduled to be run on a FAT, FAT32, or NTFS volume when the computer is started.
Displays or alters the encryption of folders and files on NTFS volumes. Used without parameters, cipher displays the encryption state of the current folder and any files it contains.
Clears the Command Prompt window.
Starts a new instance of the command interpreter, Cmd.exe. Used without parameters, cmd displays Windows XP version and copyright information.
Installs or removes a Connection Manager service profile. Used without optional parameters, cmstp installs a service profile with default settings appropriate to the operating system and to the user’s permissions.
Changes the Command Prompt window foreground and background colors for the current session. Used without parameters, color restores the default Command Prompt window foreground and background colors.
The command shell is a separate software program that provides direct communication between the user and the operating system. The non-graphical command shell user interface provides the environment in which you run character-based applications and utilities.
Compares the contents of two files or sets of files byte by byte. Comp can compare files on the same drive or on different drives, and in the same directory or in different directories. When compcompares the files, it displays their locations and file names. Used without parameters, comp prompts you to enter the files to compare.
Displays and alters the compression of files or directories on NTFS partitions. Used without parameters, compact displays the compression state of the current directory.
Converts FAT and FAT32 volumes to NTFS
Copies one or more files from one location to another.
Cleans specified profiles of wasted space and, if user-specific file associations are disabled, removes these associations from the . Profiles that are currently in use are not modified.
Command-line version of the Windows Script Host that provides command-line options for setting script properties.

D

Displays the current system date setting. Used without parameters, date displays the current system date setting and prompts you to type a new date.
Dead link
Dead link
Dead link
Compares the contents of two floppy . Used without parameters, diskcomp uses the current drive for both disks that you want to compare.
Copies the contents of the floppy disk in the source drive to a formatted or unformatted floppy disk in the destination drive. Used without parameters, diskcopy uses the current drive for the source disk and the destination disk.
DiskPart.exe is a text-mode command interpreter that enables you to manage objects (disks, partitions, or volumes) by using scripts or direct input from a command prompt.
Calls Doskey.exe, which recalls Windows XP commands, edits command lines, and creates macros.
Displays a list of all installed device drivers and their properties.

E

Turns the command-echoing feature on or off, or displays a message. Used without parameters, echo displays the current echo setting.
Ends localization of environment changes in a batch file, restoring environment variables to their values before the matching setlocal command.
Enables an administrator to create a custom event in a specified event log.
Lists the events and event properties from one or more event logs.
Displays and configures event triggers on local or remote machines.
Dead Link
Exits the current batch script or the Cmd.exe program (that is, the command interpreter) and returns to the program that started Cmd.exe or to the Program Manager.
Expands one or more compressed files. This command is used to retrieve compressed files from distribution disks.

F

Compares two files and displays the differences between them.
Used in conjunction with the command redirection pipe character (|), a command filter is a command within a command that reads the command’s input, transforms the input, and then writes the output. Filter commands help you sort, view, and select parts of a command output.
Searches for a specific string of text in a file or files. After searching the specified file or files, find displays any lines of text that contain the specified string.
Searches for patterns of text in files using regular expressions.
Displays information about a user or users on a specified remote computer (typically a computer running ) that is running the Finger service or daemon. The remote computer specifies the format and output of the user information display. Used without parameters, finger displays help.
Enables or disables flat temporary folders.
Runs a specified command for each file in a set of files.
Dead Link
Dead Link
Transfers files to and from a computer running a File Transfer Protocol (FTP) server service such as Internet Information Services. Ftp can be used interactively or in batch mode by processing ASCII text files.
Displays or modifies file types used in file name extension associations. Used without parameters, ftype displays the file types that have open command strings defined.

G

Returns the media access control (MAC) address and list of network protocols associated with each address for all network cards in each computer, either locally or across a network.
Within a batch program, directs Windows XP to a line identified by a label. When the label is found, it processes the commands that begin on the next line.
Displays Group Policy settings and Resultant Set of Policy (RSOP) for a user or a computer.
Refreshes local and Active Directory-based Group Policy settings, including settings. This command supersedes the now obsolete /refreshpolicy option for the secedit command.
Enables the ability to display an extended character set in graphics mode.

H

Provides online information about system commands (that is, non-network commands). Used without parameters, help lists and briefly describes every system command.
Starts Help and Support Center. Used without parameters, helpctr displays the Help and Support Center home page.
Displays the host name portion of the full computer name of the computer.

I

Performs conditional processing in batch programs.
Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System () settings. Used without parameters, ipconfigdisplays the IP address, subnet mask, and default gateway for all adapters.
Configures Internet Protocol Security (IPSec) policies in a directory service or in a local or remote registry. Ipseccmd is a command-line alternative to the IP Security Policies Microsoft Management Console (MMC) snap-in. Ipseccmd has three modes: dynamic mode, static mode, and query mode.
Displays and modifies information about the routing tables used by the IPX protocol. Used without parameters, ipxroute displays the default settings for packets that are sent to unknown, broadcast, and multicast addresses.
Sends files over an infrared link. Used without parameters or used with /sirftp opens the Wireless Link dialog box, where you can select the files that you want to send without using the command line.

L

Creates, changes, or deletes the volume label (that is, the name) of a disk. Used without parameters, label changes the current volume label or deletes the existing label.
Registers new Performance counter names and Explain text for a service or device driver, and saves and restores counter settings and Explain text.
Manages and schedules performance counter and event trace log collections on local and remote systems.
Displays the status of a print queue on a computer running Line Printer Daemon (LPD). Used without parameters, lpq displays command-line help for the lpq command.
Sends a file to a computer running Line Printer Daemon (LPD) in preparation for printing. Used without parameters, lpr displays command-line help for the lpr command.

M

Use the macfile commands at the command prompt to manage File Server for Macintosh servers, volumes, directories, and files. You can automate administrative tasks by including a series of commands in batch files and starting them manually or at predetermined times.
Creates a directory or subdirectory.
Opens Microsoft Management Console (MMC). Using the mmc command-line options, you can open a specific MMC console, open MMC in author mode, or specify that the 32-bit or 64-bit version of MMC is opened.
Displays system status, changes system settings, or reconfigures ports or devices. Used without parameters, mode displays all the controllable attributes of the console and the available COM devices. Because you can use mode to perform many different tasks, the syntax you need to use to carry out each task is different. Click the task that you want to perform.
Displays one screen of output at a time.
Creates, deletes, or lists a volume mount point. Mountvol is a way to link volumes without requiring a drive letter.
Moves one or more files from one directory to the specified directory.
Windows XP includes 16-bit commands (nonnative) for the MS-DOS subsystem and other subsystems. These include older commands, such as edlin or graphics, and MS-DOS-specific commands, such as debug or exe2bin. These 16-bit commands are included to maintain MS-DOS and MS OS/2 version 1.x compatibility.
Provides the means to install, modify, and perform operations on Windows Installer from the command line.
Displays a comprehensive view of your hardware, system components, and software environment.

N

Displays NetBIOS over TCP/IP (NetBT) protocol statistics, NetBIOS name tables for both the local computer and remote computers, and the NetBIOS name cache. Nbtstat allows a refresh of the NetBIOS name cache and the names registered with Windows Internet Name Service (WINS). Used without parameters, nbtstat displays help.
Displays active TCP connections, ports on which the computer is listening, Ethernet statistics, the IP routing table, IPv4 statistics (for the IP, ICMP, TCP, and UDP protocols), and IPv6 statistics (for the IPv6, ICMPv6, TCP over IPv6, and UDP over IPv6 protocols). Used without parameters, netstat displays active TCP connections.
Displays information that you can use to diagnose Domain Name System (DNS) infrastructure. Before using this tool, you should be familiar with how DNS works. The Nslookup command-line tool is available only if you have installed the TCP/IP protocol.
Perform backup operations at a command prompt or from a batch file using the ntbackup command followed by various parameters.
Runs the command interpreter Cmd.exe, rather than Command.com, after running a TSR or after starting the command prompt from within an MS-DOS application.
Ntsd is included as a courtesy to software developers. Only system developers should use this command. For more information, see the help file included with NTSD.

O

Queries or displays open files. Also queries, displays, or disconnects files opened by network users.

P

Enables an administrator to display and configure a system’s paging file Virtual Memory settings.
Sets the command path in the PATH environment variable, which is the set of directories used to search for executable files. Used without parameters, path displays the current command path.
Provides information about network latency and network loss at intermediate hops between a source and destination. Pathping sends multiple Echo Request messages to each router between a source and destination over a period of time and then computes results based on the packets returned from each router. Because pathping displays the degree of packet loss at any given router or link, you can determine which routers or subnets might be having network problems. Pathping performs the equivalent of the tracert command by identifying which routers are on the path. It then sends pings periodically to all of the routers over a specified time period and computes statistics based on the number returned from each. Used without parameters, pathping displays help.
Suspends processing of a batch program and displays a message prompting the user to press any key to continue.
Administers phone books. Used without parameters, pbadmin starts Phone Book Administrator.
Detects floating point division error (if present) in the Pentium chip, disables floating point hardware, and turns on floating point emulation.
Allows you to open a Windows XP Performance console configured with settings files from Windows NT 4.0 version of Performance Monitor.
Verifies IP-level connectivity to another TCP/IP computer by sending Internet Control Message Protocol (ICMP) Echo Request messages. The receipt of corresponding Echo Reply messages are displayed, along with round-trip times. Ping is the primary TCP/IP command used to troubleshoot connectivity, reachability, and name resolution. Used without parameters, ping displays help.
Changes the current directory to the directory stored by the pushd command.
Changes the current directory to the directory stored by the pushd command.
Configures or displays configuration information about a printer. Used without parameters, prncnfg.vbs displays command-line help for the prncnfg.vbs command.
Adds, deletes, and lists printer drivers. Used without parameters, prndrvr.vbs displays command-line help for the prndrvr.vbs command.
Pauses, resumes, cancels, and lists print jobs. Used without parameters, prnjobs.vbs displays command-line help for the prnjobs.vbs command.
Adds, deletes, and lists printers or printer connections, in addition to setting and displaying the default printer. Used without parameters, prnmngr.vbs displays command-line help for the prnmngr.vbscommand.
Creates, deletes, and lists standard TCP/IP printer ports, in addition to displaying and changing port configuration. Used without parameters, prnport.vbs displays help for the prnport.vbs command.
Prints a test page, pauses or resumes a printer, and clears a printer queue. Used without parameters, prnqctl.vbs displays command-line help for the prnqctl.vbs command.
Changes the Cmd.exe prompt. Used without parameters, prompt resets the command prompt to the default setting, the current drive letter followed by the current directory and a greater-than symbol (>).
Stores the name of the current directory for use by the popd command before changing the current directory to the specified directory.

Q

R

You can automate the connection process for any Microsoft client by using a simple batch file and the rasdial command. The rasdial command starts a network connection by using a specified entry.
Copies files between a Windows XP computer and a system running rshd, the remote shell service (daemon). Windows XP and Windows 2000 do not provide rshd service. Used without parameters,rcp displays help.
Recovers readable information from a bad or defective disk.
Adds, changes, and displays registry subkey information and values in registry entries.
This command-line tool registers .dll files as command components in the registry.
Extracts performance counters from performance counter logs into other formats, such as text-TSV (for tab-delimited text), text-CSV (for comma-delimited text), binary-BIN, or SQL.
Enables you to include comments (remarks) in a batch file or in your configuration files.
Changes the name of a file or a set of files.
Replaces files in the destination directory with files in the source directory that have the same name. You can also use replace to add unique file names to the destination directory.
Enables you to reset (delete) a session from the terminal server.
Runs commands on remote computers running the Rexec service (daemon). The rexec command authenticates the user name on the remote computer before executing the specified command. Windows XP and Windows 2000 do not provide the Rexec service. Used without parameters, rexec displays help.
Removes (that is, deletes) a directory.
Displays and modifies the entries in the local IP routing table. Used without parameters, route displays help.
Runs commands on remote computers running the RSH service or daemon. Windows XP and Windows 2000 do not provide an RSH service. An RSH service called Rshsvc.exe is provided with the Windows 2000 Server Resource Kit. Used without parameters, rsh displays help.
Runs commands on remote computers running the RSH service or daemon. Windows XP and Windows 2000 do not provide an RSH service. An RSH service called Rshsvc.exe is provided with the Windows 2000 Server Resource Kit. Used without parameters, rsh displays help.
Runs commands on remote computers running the RSH service or daemon. Windows XP and Windows 2000 do not provide an RSH service. An RSH service called Rshsvc.exe is provided with the Windows 2000 Server Resource Kit. Used without parameters, rsh displays help.

S

Communicates with the Service Controller and installed services. SC.exe retrieves and sets control information about services. You can use SC.exe for testing and debugging service programs. Service properties stored in the registry can be set to control how service applications are started at boot time and run as background processes. SC.exe parameters can configure a specific service, retrieve the current status of a service, as well as stop and start a service. You can create batch files that call various SC.exe commands to automate the startup or shutdown sequence of services. SC.exe provides capabilities similar to Services in the Administrative Tools item in Control Panel.
Schedules commands and programs to run periodically or at a specific time. Adds and removes tasks from the schedule, starts and stops tasks on demand, and displays and changes scheduled tasks.
Configures and analyzes system security by comparing your current configuration to at least one template.
Displays, sets, or removes environment variables. Used without parameters, set displays the current environment settings.
Starts localization of environment variables in a batch file. Localization continues until a matching endlocal command is encountered or the end of the batch file is reached.
Starts localization of environment variables in a batch file. Localization continues until a matching endlocal command is encountered or the end of the batch file is reached.
Starts localization of environment variables in a batch file. Localization continues until a matching endlocal command is encountered or the end of the batch file is reached.
Reads input, sorts data, and writes the results to the screen, to a file, or to another device
Starts a separate Command Prompt window to run a specified program or command. Used without parameters, start opens a second command prompt window.
Associates a path with a drive letter. Used without parameters, subst displays the names of the virtual drives in effect.
Displays detailed configuration information about a computer and its operating system, including operating system configuration, security information, product ID, and hardware properties, such as RAM, disk space, and network cards.
Scans and verifies the versions of all protected system files after you restart your computer.

T

Ends one or more tasks or processes. Processes can be killed by process ID or image name.
Displays a list of applications and services with their Process ID (PID) for all tasks running on either a local or a remote computer.
Displays a list of applications and services with their Process ID (PID) for all tasks running on either a local or a remote computer.
TCP/IP utilities offer network connections to other computers, such as UNIX workstations. You must have the TCP/IP network protocol installed to use the TCP/IP utilities. For information about starting TCP/IP services from the command prompt, see Net start For information about stopping TCP/IP services from the command prompt, see Net stop
The telnet commands allow you to communicate with a remote computer that is using the Telnet protocol. You can run telnet without parameters in order to enter the telnet context, indicated by the Telnet prompt (telnet>). From the Telnet prompt, use the following commands to manage a computer running Telnet Client.The tlntadmn commands allow you to remotely manage a computer running Telnet Server. These commands are run from the command prompt. Used without parameters, tlntadmn displays local server settings.
Transfers files to and from a remote computer, typically a computer running UNIX, that is running the Trivial File Transfer Protocol (TFTP) service or daemon. Used without parameters, tftp displays help.
Displays or sets the system time. Used without parameters, time displays the system time and prompts you to enter a new time.
Creates a title for the command prompt window.
Processes event trace logs or real-time data from instrumented event trace providers and allows you to generate trace analysis reports and CSV (comma-delimited) files for the events generated.
Determines the path taken to a destination by sending Internet Control Message Protocol (ICMP) Echo Request messages to the destination with incrementally increasing Time to Live (TTL) field values. The path displayed is the list of near-side router interfaces of the routers in the path between a source host and a destination. The near-side interface is the interface of the router that is closest to the sending host in the path. Used without parameters, tracert displays help.
Graphically displays the directory structure of a path or of the disk in a drive.
Displays the contents of a text file. Use the type command to view a text file without modifying it.
Writes performance counter data to the command window, or to a supported log file format. To stop Typeperf, press CTRL+C.

U

Removes Performance counter names and Explain text for a service or device driver from the system registry.

V

Displays the Windows XP version number.
Windows XP does not use this command. It is accepted only for compatibility with MS-DOS files.
Displays the disk volume label and serial number, if they exist. A serial number is displayed for a disk formatted with MS-DOS version 4.0 or later.
Displays current volume shadow copy backups and all installed shadow copy writers and providers in the command window.

W

A tool used to diagnose problems occurring with Windows Time
Performs an installation of or upgrade to Windows XP. If you have hardware that is compatible with Windows XP, you can run winnt at a Windows 3.x or MS-DOS command prompt.
Performs an installation of or upgrade to Windows XP. You can run winnt32 at the command prompt on a computer running Windows 95, Windows 98, Windows Millennium Edition, Windows NT, Windows 2000, or Windows XP.
The Windows Management Instrumentation Command-line (WMIC) is a command-line and scripting interface that simplifies the use of Windows Management Instrumentation (WMI) and systems managed through WMI.

X

Copies files and directories, including subdirectories.
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