Backup data with rsync in macOS Terminal and keep old files
Use Rsync in Terminal on macOS 11 to backup local files to an external drive
Helpful tips shown:
1. Keep old versions of modified and deleted files.
2. Format a path with spaces
3. Use the modify-window option to stop unchanged files from being copied every run
Here is the command:
rsync -abv --modify-window=2 --backup-dir="/Users/User1/Desktop/History/ $(date +\%Y\%m\%d_\%H\%M\%S)" --delete /Users/user1/Desktop/Src\ Files/ /Volumes/KINGSTON/Dest/
Make sure the quotes around the backup directory are vertical. Slanted quotations failed to run for me