JSI Tip 5870. Freeware app can return the current user name in various formats.

Download Username.zip.

When you type username /?, you receive:

UserName V01.00.00cpp Joe Richards ([email protected]) October 2002

Usage:
 UserName \[switches\]


  Switches: (designated by - or /)
   -t text    Text to write in front of value (not valid with -f).
   -f file    Writes a file with cmd/bat file format with major formats.
      Variables possibly defined
       UN-DN           Fully Qualified DN
       UN-SAM          SAM Name
       UN-Display      Display Name
       UN-UniqueID     Unique ID
       UN-Canonical    Canonical Name
       UN-UPN          User Principal Name
   -format x  Format to write value in:
       1               Fully Qualified DN
       2               SAM Name
       3               Display Name
       6               Unique ID
       7               Canonical Name
       8               User Principal Name
       9               Canonical Name Extended (2 line output)
       10              Service Principal Name

  Note:
    Write the output to a cmd or bat file and then CALL the file and it
    will load the environment variables into the environment namespace.

  Ex1:
    username
      Displays current user's SAM Account Name

  Ex2:
    username -format 1
      Displays current user's Full Qualified DN
  Ex3:
    username -format 1 -t "set u="
      Displays current user's FQ DN as set u=
  Ex4:
    username -f vars.cmd
      Dumps all values it can to vars.cmd in set xxx= format


 This software is Freeware. Use it as you wish at your own risk.
 If you have improvement ideas, bugs, or just wish to say Hi, I
 receive email 24x7 and read it in a semi-regular timeframe.
 You can usually find me at [email protected]