On 07/08/2013 09:39 AM, John Reiser wrote:
1. Install a userid whose login shell is /usr/bin/sync
(or a script which does "sync; sync")
2. Login as the sync user (twice, perhaps.)
Running sync multiple times doesn't have any particular purpose on Linux.
http://utcc.utoronto.ca/~cks/space/blog/unix/TheLegendOfSync