Use Launchd to run Rsnapshot daily
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>local.my-mac.rsnapshot-daily</string> <key>ProgramArguments</key> <array> <string>/opt/local/bin/rsnapshot</string> <string>daily</string> </array> <key>StartCalendarInterval</key> <dict> <key>Hour</key> <integer>3</integer> </dict> </dict> </plist>