you dont need to worry about rest of code just look for xp_cmdshell invoke statement
...
declare @ssisstr varchar(8000)
set @ssisstr='dtexec /f "G:\4.FinMgt\Proj_Forecast\pkg_import_months.dtsx"'
DECLARE @returncode int
EXEC @returncode = xp_cmdshell @ssisstr
SELECT @returncode
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SQL Server MVP
http://visakhm.blogspot.com/