Runas

In computing, codice_1 is a command in the Microsoft Windows line of operating systems that allows a user to run specific tools and programs under a different username to the one that was used to logon to a computer interactively. It is similar to the Unix commands codice_2 and codice_3, but the Unix commands generally require prior configuration by the system administrator to work for a particular user and/or command.
Microsoft Windows.
The codice_1 command was introduced with the Windows 2000 operating system. Any application can use this API to create a process with alternate credentials, for example, Windows Explorer in Windows 7 allows an application to be started under a different account if the shift key is held while right-clicking its icon. The program has the ability to cache verified credentials so that the user only ever has to enter them once.
Syntax.
The command-syntax is:
runas [{/profile | /noprofile}] [/env] [/netonly] [/smartcard] [/showtrustlevels] [/trustlevel:<TrustLevel>] [/savecred] /user:<UserAccountName> program
Parameters.
This section is paraphrased from the codice_5 command.
Note: Only type in the user's password, when the system asks for it.
Note: The codice_7 switch is not compatible with the codice_9 switch.
Note: The codice_10 and the codice_11 switches may not be used together.
Examples.
runas /noprofile /user:machine\administrator cmd
runas /profile /env /user:domain\admin "mmc %windir%\system32\dsa.msc"
runas /user:user@domain.example.org "notepad C:\filename.txt"
runas /user:administrator /savecred "shutdown /i"
Inferno.
The command is also included in the Inferno operating system.
Syntax.
codice_1 writes the codice_23 to codice_24 and invokes codice_25 with the given arguments.
runas user cmd [arg...]
Note: The command is only invoked if setting of the user name succeeds.