Sync folder between two macs

xzmac wrote:

How can I keep a folder synchronised between imac and macbook?

Use iCloud to synchronize files across all devices accessing the iCloud account.

Set up iCloud on your Mac - Apple Support

Use OneDrive, GoogleDrive, DropBox, or similar cloud service.

Or, use a network drive, or use an external usb drive that you switch back and forth between computers.

...or put another Mac to target disk mode and use Carbon Copy Cloner to sync the folder (I have used a master folder but I have not tried if this works in both directions, i.e. if it is possible to update either folder and sync that).

not without 3rd party stuff

maybe take a look at

Keyboard Maestro 10.1.1: Work Faster with Macros for macOS

Sync Two Folders | MacRumors Forums

How To Synchronize Two Folders Mac Os X? – LEMP

more

macos keep two dirs in sync - Google-

Has noted, you would need a third-party app to do it as you would like, or you can learn how to rsync in the command line.