1. backup

stsadm -o backup -url -filename

2. restore

stsadm -o restore -url -filename

f.e.
stsadm – o backup -url http://mysite -filename c:\backup\mysite.bak

1. Add the solution
stsadm -o addsolution -filename {WSPFILENAME}

2. Deploy the solution
stsadm -o deploysolution -name {WSPFILENAME} -url {SITEURL}

3. Install the feature
stsadm -o installfeature -filename {FeatureFolder}\feature.xml

4. Activate the feature
stsadm -o activatefeature -id {FEATUREID} -url {SITEURL} -force

5. Deactive the feature
Stsadm.exe -o deactivatefeature -filename “C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\FEATURES\ViewFormPagesLockDown\feature.xml” -ur http://servername/

6.Uninstall the feature
stsadm -o uninstallfeature -filename

7.Retract Solution
stsadm -o retractsolution