How to do a Sharepoint site export:

• stsadm -o export -url http://sharepointsite -filename c:\backup\sharepointsite.bak -includeusersecurity -versions 4 -nofilecompression

Hot to do a Sharepoint site import:

• stsadm –o import –url http://sharepointsite -filename c:\backup\sharepointsite.bak –includeusersecurity

More information to stsadm:

C:\>stsadm -help export

stsadm.exe -o export
           -url <URL to be exported>
           -filename <export file name>
               [-overwrite]
           [-includeusersecurity]
           [-haltonwarning]
           [-haltonfatalerror]
           [-nologfile]
           [-versions <1-4>
               1 - Last major version for files and list items (default)
               2 - The current version, either the last major or the last minor
               3 - Last major and last minor version for files and list items
               4 - All versions for files and list items]
           [-cabsize <integer from 1-1024 megabytes> (default: 25)]
           [-nofilecompression]
           [-quiet]

C:\>stsadm -help import

stsadm.exe -o import
           -url <URL to import to>
           -filename <import file name>
           [-includeusersecurity]
           [-haltonwarning]
           [-haltonfatalerror]
           [-nologfile]
           [-updateversions <1-3>
               1 - Add new versions to the current file (default)
               2 - Overwrite the file and all its versions (delete then insert)
               3 - Ignore the file if it exists on the destination]
           [-nofilecompression]
           [-quiet]