Backup SharePoint site collections and sites with STSADM

The STSADM command is extremely useful in the management of site collections and sub-sites.  Here are a few commands that I have used in my daily SharePoint backups:

*  Back-up an entire Site Collection to a single file:
 

stsadm -o backup -url http://sitecollection -filename c:\site_collection_backup

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*  Back-up one site to a single file:  
 

stsadm -o export -url http://site -filename c:\site_backup

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*  Restore a site collection from that file:  
 

stsadm -o restore -url http://sitecollection -filename c:\site_collection_backup

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*  Restore a site from that file:  

stsadm -o import -url http://site -filename c:\site_backup

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