--NSI.SYS Defines functions that change display graphics, control cursor movement, and reassign keys.
--APPEND Causes MS-DOS to look in other directories when editing a file or running a command.
--ARP Displays, adds, and removes arp information from network devices.
--ASSIGN Assign a drive letter to an alternate letter.
--ASSOC View the file associations.
--AT Schedule a time to execute commands or programs.
--ATMADM Lists connections and addresses seen by Windows ATM call manager.
--ATTRIB Display and change file attributes.
--BATCH Recovery console command that executes a series of commands in a file.
--BOOTCFG Recovery console command that allows a user to view, modify, and rebuild the boot.ini
--BREAK Enable / disable CTRL + C feature.
--CACLS View and modify file ACL's.
--CALL Calls a batch file from another batch file.
--CD Changes directories
--CHCP Supplement the International keyboard and character set information.
--CHDIR Changes directories.
--CHKDSK Check the hard disk drive running FAT for errors.
--CHKNTFS Check the hard disk drive running NTFS for errors.
--CHOICE Specify a listing of multiple options within a batch file.
--CLS Clears the screen.
--CMD Opens the command interpreter.
--COLOR Easily change the foreground and background color of the MS-DOS window.
--COMP Compares files.
--COMPACT Compresses and uncompress files.
--CONTROL Open control panel icons from the MS-DOS prompt.
--CONVERT Convert FAT to NTFS.
--COPY Copy one or more files to an alternate location.
--CTTY Change the computers input/output devices.
--DATE View or change the systems date.
--DEBUG Debug utility to create assembly programs to modify hardware settings.
--DEFRAG Re-arrange the hard disk drive to help with loading programs.
--DEL Deletes one or more files.
--DELETE Recovery console command that deletes a file.
--DELTREE Deletes one or more files and/or directories.
--DIR List the contents of one or more directory.
--DISABLE Recovery console command that disables Windows system services or drivers.
--DISKCOMP Compare a disk with another disk.
--DISKCOPY Copy the contents of one disk and place them on another disk.
--DOSKEY Command to view and execute commands that have been run in the past.
--DOSSHELL A GUI to help with early MS-DOS users.
--DRIVPARM Enables overwrite of original device drivers.
--ECHO Displays messages and enables and disables echo.
--EDIT View and edit files.
--EDLIN View and edit files.
--EMM386 Load extended Memory Manager.
--ENABLE Recovery console command to enable a disable service or driver.
--ENDLOCAL Stops the localization of the environment changes enabled by the setlocal command.
--ERASE Erase files from computer.
--EXIT Exit from the command interpreter.
--EXPAND Expand a M*cros*ft Windows file back to it's original format.
--EXTRACT Extract files from the M*cros*ft Windows cabinets.
--FASTHELP Displays a listing of MS-DOS commands and information about them.
--FC Compare files.
--FDISK Utility used to create partitions on the hard disk drive.
--FIND Search for text within a file.
--FINDSTR Searches for a string of text within a file.
--FIXBOOT Writes a new boot sector.
--FIXMBR Writes a new boot record to a disk drive.
--FOR Boolean used in batch files.
--FORMAT Command to erase and prepare a disk drive.
--FTP Command to connect and operate on a FTP server.
--FTYPE Displays or modifies file types used in file extension associations.
--GOTO Moves a batch file to a specific label or location.
--GRAFTABL Show extended characters in graphics mode.
--HELP Display a listing of commands and brief explanation.
--IF Allows for batch files to perform conditional processing.
--IFSHLP.SYS 32-bit file manager.
--IPCONFIG Network command to view network adapter settings and assigned values.
--KEYB Change layout of keyboard.
--LABEL Change the label of a disk drive.
--LH Load a device driver in to high memory.
--LISTSVC Recovery console command that displays the services and drivers.
--LOADFIX Load a program above the first 64k.
--LOADHIGH Load a device driver in to high memory.
--LOCK Lock the hard disk drive.
--LOGON Recovery console command to list installations and enable administrator login.
--MAP Displays the device name of a drive.
--MD Command to create a new directory.
--MEM Display memory on system.
--MKDIR Command to create a new directory.
--MODE Modify the port or display settings.
--MORE Display one page at a time.
--MOVE Move one or more files from one directory to another directory.
--MSAV Early M*cros*ft Virus scanner.
--MSD Diagnostics utility.
--MSCDEX Utility used to load and provide access to the CD-ROM.
--NBTSTAT Displays protocol statistics and current TCP/IP connections using NBT
--NET Update, fix, or view the network or network settings
--NETSH Configure dynamic and static network information from MS-DOS.
--NETSTAT Display the TCP/IP network protocol statistics and information.
--NLSFUNC Load country specific information.
--NSLOOKUP Look up an IP address of a domain or host on a network.
--PATH View and modify the computers path location.
--PATHPING View and locate locations of network latency.
--PAUSE Command used in batch files to stop the processing of a command.
--PING Test / send information to another network computer or network device.
--POPD Changes to the directory or network path stored by the pushd command.
--POWER Conserve power with computer portables.
--PRINT Prints data to a printer port.
--PROMPT View and change the MS-DOS prompt.
--PUSHD Stores a directory or network path in memory so it can be returned to at any time.
--QBASIC Open the QBasic.
--RD Removes an empty directory.
--REN Renames a file or directory.
--RENAME Renames a file or directory.
--RMDIR Removes an empty directory.
--ROUTE View and configure windows network route tables.
--RUNAS Enables a user to execute a program on another computer.
--SCANDISK Run the scandisk utility.
--SCANREG Scan registry and recover registry from errors.
--SET Change one variable or string to another.
--SETLOCAL Enables local environments to be changed without affecting anything else.
--SETVER Change MS-DOS version to trick older MS-DOS programs.
--SHARE Installs support for file sharing and locking capabilities.
--SHIFT Changes the position of replaceable parameters in a batch program.
--SHUTDOWN Shutdown the computer from the MS-DOS prompt.
--SMARTDRV Create a disk cache in conventional memory or extended memory.
--SORT Sorts the input and displays the output to the screen.
--START Start a separate window in Windows from the MS-DOS prompt.
--SUBST Substitute a folder on your computer for another drive letter.
--SWITCHES Remove add functions from MS-DOS.
--SYS Transfer system files to disk drive.
--TELNET Telnet to another computer / device from the prompt.
--TIME View or modify the system time.
--TITLE Change the title of their MS-DOS window.
--TRACERT Visually view a network packets route across a network.
--TREE View a visual tree of the hard disk drive.
--TYPE Display the contents of a file.
--UNDELETE Undelete a file that has been deleted.
--UNFORMAT Unformat a hard disk drive.
--UNLOCK Unlock a disk drive.
--VER Display the version information.
--VERIFY Enables or disables the feature to determine if files have been written properly.
--VOL Displays the volume information about the designated drive.
--XCOPY Copy multiple files, directories, and/or drives from one location to another.
--TRUENAME When placed before a file, will display the whole directory in which it exists
--TASKKILL It allows you to kill those unneeded or locked up applications