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    <div class="moz-cite-prefix">I think this is what I'm looking for.<br>
      <br>
      <a class="moz-txt-link-freetext" href="http://manpages.ubuntu.com/manpages/trusty/man7/inotify.7.html">http://manpages.ubuntu.com/manpages/trusty/man7/inotify.7.html</a><br>
      <br>
      Thanks Zack and Jordan.  I think some combination of rsync,
      srcipts, and C++ code is what I'm going to use.  I mainly wanted
      to know if there was something like "just install this and it will
      solve your problem," which there seems not to be.<br>
      <br>
      I guess the data size is not so much an issue as the number of
      files I'm talking about synching which I think is about 3 or 4
      million files.  I know that Hostgator limits the number of files
      for inexpensive accounts to about 200k, although they claim
      unlimited data size (or used to).<br>
      <br>
      Thanks,<br>
      <br>
      Omar<br>
      <br>
      <br>
      On 11/22/2014 11:18 AM, Omar Eljumaily wrote:<br>
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      <div class="moz-cite-prefix">I think it would be cheaper to just
        get directory/file mod listings, which I'm already paranoid
        would create undo overhead.  I know that Samba plugins can tell
        you when files have been modified without searching.  I'm
        wondering if there's such a thing for Linux file systems.<br>
        <br>
        Thanks,<br>
        <br>
        Omar<br>
        <br>
        <br>
        On 11/22/2014 11:14 AM, Zack Gold wrote:<br>
      </div>
      <blockquote
cite="mid:CAKni=iFkdccBK81SAkSK_LTVYHZiLyqVhcHAg_3eacMm+bMJtQ@mail.gmail.com"
        type="cite">
        <p dir="ltr">You could write a clever script that stores md5sums
          of every file and check I'd it's changed.</p>
        <div class="gmail_quote">On Nov 22, 2014 2:13 PM, "Omar
          Eljumaily" <<a moz-do-not-send="true"
            href="mailto:omar@omnicode.com">omar@omnicode.com</a>>
          wrote:<br type="attribution">
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">I'd like
            to have the knowledge of when a file changes.  I don't know
            how to get those notifications in linux.  Does anybody know?<br>
            <br>
            Also, not all files get closed to the point where they can
            be copied every time they're modified.  Windows clients are
            notorious for keeping files open all day long without
            letting other processes copy them.<br>
            <br>
            The thing with the could side is that I don't want to be the
            person responsible for running the cloud server, so I'm
            going to have to work within the cloud provider's
            framework.  The ones I'm looking at right now are Google and
            <a moz-do-not-send="true" href="http://1and1.com"
              target="_blank">1and1.com</a> (which seems to be pretty
            cheap, about $10/month for 1 terrabyte).<br>
            <br>
            Thanks,<br>
            <br>
            Omar<br>
            <br>
            <br>
            On 11/22/2014 10:57 AM, Jordan Erickson wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex"> I use
              rsync+ssh+rsnapshot+cron for a (albeit daily) backup of
              multiple<br>
              VMs in "the cloud" (my cloud) totaling about 1.5TB total
              to a local<br>
              disk, then another rsnapshot to an external disk about
              every month. It's<br>
              fast. rsync is designed to take large amounts of data and
              sync them<br>
              efficiently.<br>
              <br>
              Is there a requirement for "every hour" (and not something
              more frequent<br>
              like, every time a file changes)? If not, maybe a trigger
              that whenever<br>
              a file changes, it's sync'd... I'm sure multiple avenues
              are possible<br>
              with some simple script-fu (and probably plenty of
              ready-to-go packages<br>
              as well).<br>
              <br>
              <br>
              Jordan Erickson (PGP: 0x78DD41CB)<br>
              LNS: <a moz-do-not-send="true" href="tel:707-636-5678"
                value="+17076365678" target="_blank">707-636-5678</a>, <a
                moz-do-not-send="true"
                href="http://logicalnetworking.net" target="_blank">http://logicalnetworking.net</a><br>
              <br>
                <br>
              On 11/22/2014 10:50 AM, steve wrote:<br>
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex"> On
                11/22/2014 10:43 AM, Zack Gold wrote:<br>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  rsync + cron?<br>
                  <br>
                  On Nov 22, 2014 1:36 PM, "Omar Eljumaily" <<a
                    moz-do-not-send="true"
                    href="mailto:omar@omnicode.com" target="_blank">omar@omnicode.com</a><br>
                  <mailto:<a moz-do-not-send="true"
                    href="mailto:omar@omnicode.com" target="_blank">omar@omnicode.com</a>>>

                  wrote:<br>
                  <br>
                       Does anybody know about file synchronization
                  strategies, mainly for<br>
                       synching from a local file server to a cloud? 
                  What I'm trying to<br>
                       accomplish is:<br>
                </blockquote>
                For a terebyte???<br>
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