How to get the windows current user currently logged from SQL Server

Hi I am using exec master..xp_cmdshell "ECHO %USERNAME%" to get the windows
user name currently logged in. But it gives me the NULL value. I even tried
exec master..xp_cmdshell "ECHO SET %USERNAME%" but it doesnt help me.
Does any body have idea how to get the windows user name who is currently lo
gged from SQL Server.
Thanks for you help.
HemanthTry suser_sname()
Ray Higdon MCSE, MCDBA, CCNA
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"Hemanth" <kamishetty@.hotmail.com> wrote in message
news:8843EE8B-D217-4DA1-A47F-D7D19804C819@.microsoft.com...
> Hi I am using exec master..xp_cmdshell "ECHO %USERNAME%" to get the
windows user name currently logged in. But it gives me the NULL value. I
even tried exec master..xp_cmdshell "ECHO SET %USERNAME%" but it doesnt
help me.
> Does any body have idea how to get the windows user name who is currently
logged from SQL Server.
> Thanks for you help.
> Hemanth
>sql