How to activate SharePoint feature using stsadm command

**********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%
***********************************************************************************************

(For SIte)
>stsadm -o activatefeature -filename HDNSSiteFeatures\feature.xml -force -url http://mainsitedev.hdn.net/sites/eF

(For WEB)
>STSADM -o activatefeature -id 0be49fe9-9bc9-409d-abf9-702753bd878d -url http://mainsitedev.hdn.net/sites/eF