Important

If you are new to the command line tool rsync and RsyncUI please read this information. RsyncUI is a GUI only on top of the command line tool. It is rsync which does the actual work, not RsyncUI

The –delete parameter and new tasks

The --delete parameter is a default parameter set by RsyncUI. The parameter instructs rsync to keep the source and destination in sync. The parameter instructs rsync to delete all files in the destination which are not present in the source.

Default parameters set by RsyncUI to rsync can be disabled task by task. If you decide to disable a default parameter, be sure you understand what the result is. A disabled default parameter can be enabled again.

Be safe

rsync is a fantastic tool, but used wrong may cause damage and lost data. There are some verification and checks in RsyncUI. But it is your own responsibilty to verify that a new tasks does exactly what you want it to do before the real run.

The snapshot feature of rsync is a very nice feature. It is possible to change the snapshot number.

If you let RsyncUI do the job and you are most likely safe. RsyncUI is a free and opensource application, please read the MIT licence.

Aborting tasks

Please be aware it is an external task not controlled by RsyncUI, which executes the command line tool rsync. RsyncUI is monitoring the task for progress and termination.

RsyncUI as your main tool for backup

The User Interface of RsyncUI can for users who dont know rsync, be difficult or complex to understand. The main objective is to ease the use of rsync, not teach macOS users how to use it. That is beyond the scope.