Depending on the type of installation (first install, upgrade, patch...) that you want to perform, you must use different arguments when you launch the Sysload Agent's setup.
Sysload Agents on Linux / Unix or Windows
|TASK OPTION||TASK FUNCTION|
|-task install||Required to Initially install product.|
|-task upgradefrom5.1x||Upgrades an Agent from a version preceding 5.20.|
|-task installupgrade||If an existing installation of a previous version exists, it will be upgraded. If not, the task proceeds with a new installation.|
|-task patch||Installs a product over an existing installation (same version but higher build number).|
|-task repair||Reinstalls an existing version in order to repair it.|
|-task uninstall||Uninstalls a Sysload product. The command should be run from the directory of the product to be uninstalled.|
For more details please refer the General setup (Command Mode) documentation page.