For a sharepoint developer/Admin stsadm command is a must known command. I am going to explain how to use the stsadm command. 1.In order to retract solution from your site, you can use the command like as follows. stsadm -o retractsolution -name "solutionName.wsp" -url "site url from which you want to retract the solution" -immediate 2. In order to add solution to the solution repository present in the central administration stsadm -o addsolution -filename "path to the solution present in your local hard disk/solutionName.wsp" 3.In order to deploy the solution on particular site stsadm -o deploysolution -name "solutionName.wsp" -url "site url" -immediate -allowgacdeployment -force There are few more use of stsadm command .You can explore if you want Thanks