How to backup and restore SharePoint site using stsadm

**********for SharePoint 2007********

@set PATH=C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN;%PATH%

**********for SharePoint 2010/13********
@set PATH=C:\Program Files\Common Files\Microsoft Shared\web server extensions\14\BIN;%PATH%
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>stsadm.exe -o backup -url http://mainsite.hdn.net/sites/ms -filename D:\backup\ms\ms.dat -overwrite

>stsadm.exe -o restore -url http://mainsitedev.hdn.net/sites/ms -filename D:\backup\ms\ms.dat -overwrite