Enable xp_cmdshell in SQL server 2008

Use t-sql to turn on  xp_cmdshell in SQL server 2008

Run this on the master database.
Source:

EXECUTE SP_CONFIGURE 'show advanced options', 1
RECONFIGURE WITH OVERRIDE
GO
 
EXECUTE SP_CONFIGURE 'xp_cmdshell', '1'
RECONFIGURE WITH OVERRIDE
GO
 
EXECUTE SP_CONFIGURE 'show advanced options', 0
RECONFIGURE WITH OVERRIDE
GO