JSI Tip 7308. The Windows XP and Windows Server 2003 Whoami utility.

When you use the Windows XP CMD help., or Windows Server 2003 CMD help, and press Whoami on the New command-line tools page, you see:

Whoami

Returns domain name, computer name, user name, group names, logon identifier, and privileges for the user who is currently logged on.

Syntax

whoami \{/upn | /fqdn | /logonid\}

whoami \[\{/user | /groups | /priv\}\] \[/fo Format\]

whoami /all \[/fo Format\]

Parameters

/upn
Displays the user name in user principal name (UPN) format.
/fqdn
Displays the user name in fully qualified domain name (FQDN) format.
/logonid
Displays logon ID.
/user
Displays the current user name.
/groups
Displays group names.
/priv
Displays privileges.
/fo Format
Specifies the output format. The following table lists valid Format values.
Value Description
table Displays output in a table. This is the default value.
list Displays output in a list.
csv Displays output in comma-delimited (.csv) format.
/all
Displays the active user name and groups, and the security identifiers (SID) and privileges in the current access token.
/?
Displays help at the command prompt.

Remarks

  • Whoami displays the complete contents of the access token (for example, the current user's security context) in the command window. It displays the user name and security identifier (SID), the group names, types, attributes and their SIDs, the privileges and their status (for example, enabled or disabled), and the logon ID.

Examples

To learn the domain and user name of the person who is currently logged on to this computer, type:

whoami

Whoami returns the domain of the user followed by the user name. Output similar to the following appears in the Command Prompt window:

DOMAIN1\administrator

To display all of the information in the current access token, type:

whoami /all



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