RUNAS (Windows 2000/XP)

Execute a program under a different user account.

syntax
      RUNAS [/profile] [/env] [/netonly] /user: program

key
   /profile   Option to load the user's profile (registry)
   /env       Use current environment instead of user's.
   /netonly   Use if the credentials specified are for RAS only.
   /user      Username in form USER@DOMAIN or DOMAIN\USER
              (USER@DOMAIN is not compatible with /netonly)
   program    The command to execute

Examples:
   runas /profile /user:mymachine\administrator CMD
   runas /profile /env /user:SCOT_DOMAIN\administrator NOTEPAD
   runas /env /user:user@domain.microsoft.com "NOTEPAD \"my file.txt\""

NOTE:  Enter user's password only when prompted.

Related Commands:

AT - Run a command on a remote machine (at a scheduled time)
joeware.net - CPAU (Create Process As User) like RunAs but with extra options for supplying the password.

Equivalent Linux BASH commands:

SU - Switch User