General Extended Stored Procedures

SQL Server 2005 supports the following system stored procedures that provide an interface from an instance of SQL Server to external programs for various maintenance activities.
xp_cmdshell
xp_logininfo
xp_enumgroups
xp_msver
xp_findnextmsg
xp_revokelogin
xp_grantlogin
xp_sprintf
xp_logevent
xp_sqlmaint
xp_loginconfig
xp_sscanf

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