If you run this statement In SQL Server Query Analyzer:
EXEC master..xp_cmdshell 'dir *.exe'
You will get the result as DOS DIR Command. Using this, you can run all DOS commands.
A sample result looks like this:
09/21/01 08:25a 26,384 actmovie.exe09/24/01 10:07a 118,032 addgrpw.exe09/21/01 08:25a 155,920 addusrw.exe10/14/96 07:08a 10,774 append.exe04/29/99 12:04p 21,264 ARP.EXE10/14/96 07:08a 27,920 at.exe04/29/99 12:04p 22,800 ATSVC.EXE10/14/96 07:08a 27,920 attrib.exe09/21/01 08:25a 153,088 AUTMGR32.EXE