1.xcodebuild clean -project $projectname.xcodeproj -configuration Release -alltargets
2.xcodebuild archive -project $projectname.xcodeproj -scheme $schemename -archivePath $projectname.xcarchive
3.xcodebuild -exportArchive -archivePath $projectname.xcarchive -exportPath $projectname -exportFormat ipa -exportProvisioningProfile “Provisioning Profile Name”