The following sample copy file command shell can be saved into a file called weeklybackup.cmd (or weeklybackup.bat):

XCOPY D:\backup\accountmaster.bak \\ServerIP\D$\backup\accountmasterweekly.bak /Q

The cmd file can contain other operating system commands as well. It can be executed from xp_cmdshell or SQL Server Agent just by giving the name "weeklybackup.cmd".

To turn off echo, include as first line @ECHO OFF.

Related article:

Batch Files (Scripts) in Windows