configure sqlcmd to automatically run your script every time it starts? I have created a sqlcmd startup script that i have stored in c:\myscript.sql, and I want it to run every time i start sqlcmd. 
     how do I configure sqlcmd to automatically run your script every time it starts?
You will need to set the SQLCMDINI variable in Windows.  For example: 

C:\SET SQLCMDINI=c:\sqlscripts\init.sql

The init.sql (or whatever you name it) would contain the initial script.