Syncing Linux server data with data on my Mac
You can combine the GUI-based arRsync tool for OS X with the use of /net to automount the share to achieve what you desire.

The remote share will be automatically mounted as long as you access as /net/hostname/exportname. So use that path in arRsync and when you fire the sync it'll automount and then scan and sync just the deltas.

There's good old command line rsync available if you prefer. It ships with OS X. Here is the manual page for it.