From HowToGeek

This page has a list of all command line utilities in Windows.

Overview

To run these commands, you'll need to open a command prompt (either type cmd into the start menu search or run box, or find the item listed in the accessories menu under the start menu)

Command	Description
attrib	Allows setting of hidden, read only and system file attributes.
cacls	Utility to change permissions of files. Windows Vista users should use icacls instead.
chkdsk	Checks your hard drive for errors and optionally repairs them.
cls	Clears the command prompt screen.
copy	Copies files from one location to another.
del	Deletes one or multiple files.
dir	Shows a list of files and folders.
echo	Display a message out to the command prompt display.
exit	Close the command prompt or exit a script.
fc	Compare two files and display the differences.
for	Loop through a set and run a command for each item.
fsutil	A powerful command that can be used to configure many file system properties.
ftype	Display or change file associations from the command line.
getmac	Display the MAC address for your network card.
goto	Go to a specific line in a batch file. Also the bane of the programming world.
icacls	Display or change the access control list (permissions) for files.
if	Used as a conditional operator in a batch file.
ipconfig	Display and change your TCP/IP configuration settings, or to flush DNS or renew DHCP leases.
mkdir	Make a directory. Also can be used through the md command.
more	Displays output of a command one screen at a time.
move	Move a file or files from one place to another.
net	A set of commands for interacting with Windows network functions.
netsh	Powerful utility that can adjust many network and interface settings.
netstat	Displays immediate networks stats, such as open ports and routing table information.
path	Set the path used by Windows for finding files without having to type the full path of a file.
pathping	Used for network troubleshooting.
pause	Used in batch files to pause the display.
ping	Used for simple network troubleshooting. Not very powerful.
popd	Change the directory back to the directory stored by pushd.
pushd	Change the directory and store the current directory.
reg	Interact with the registry from the command prompt.
rmdir	Delete a folder. Can also be used with the "rd" command.
ren	Change the name of files or folders.
sc	Useful for configuring services.
schtasks	Schedule tasks.
set	Display or change environment variables.
sfc	System File Checker, used to check whether system files are valid or not.
shutdown	Shutdown the computer, optionally restarting if specified.
start	Start a new application separate from the current session.
subst	Map a folder to a drive letter.
systeminfo	Show detailed info about the computer.
taskkill	Used to kill processes.
tasklist	Display a list of processes with their IDs, useful in conjunction with taskkill.
tracert	Used for troubleshooting network connections by tracing through the route to a server.
tree	Display the directory structure in an ascii-style tree.
type	Show the contents of a text file, similar to the cat command on Linux.
xcopy	Copy command that also copies subdirectories and files.