Syncing devices

[R. Wood]

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Allegedly, on Thu, May 31, 2007 at 08:51:52PM -0400, Tom Mckay stated:
> On 5/28/07, Matt Price wrote:
> > On Mon, 2007-28-05 at 12:21 -0400, R. Wood wrote:
> > > Allegedly, on Mon, May 28, 2007 at 12:55:16PM -0300, Richard Seguin stated:
> > > > Hey would anyone out there know if there is an app that will
> > > > take a removable device like a USB key and compare the contents
> > > > to a local folder to see if there the same?
> > > >
> > > > I save work off site on my USB key and I also do work on my
> > > > local machine,  it takes too long to find out what documents are
> > > > newer or have been updated.
> > > >
> > > > Richard
> > >
> > > 'unison' is worth a look (I think the GUI package is 'unison-gtk' ?)
> >
> > this is correct.  you can also just use rsync for this (man rsync)
> > if your needs are simple; i always sync my home and work computers
> > at the end/beginning of the day so i never lose track of stuff like
> > this.  works better than a usb key, too, if you have 24-hour ssh
> > access to a machine, esp if you can stay with linux all the time
> > (rsync can be a pain to install on windows as i recall).
> >
> > matt
>
> along the rsync lines, there is a nice GUI available using rsync
> called grsync. it does everything and everything you need, and it is
> capable of saving profiles, etc.

Tom, I think it is important to emphasize that the right tool for your
job depends, as usual, on your requirements :-)

Unison does have certain advantages over rsync.  For example, it does
'bi-directional' synchronization, meaning that it can synchronize 2
hosts that have changed content, in both directions (rsync is typically
used to do uni-directional synchronization).  This can be damned handy
:-)

Another nice feature: unison will synchronize between wind0ze and linux
boxes/file systems.  And unison does include an rsync type of
algorhythm, in the sense that it will only transfer the information that
has changed, and not *all* the files.  Again, handy on occasion.

Anyhow, YMMV, but do realize that the right tool for the job really
depends on exactly what you are trying to accomplish.

HTH,
Have Fun with GNU/Linux,
Raymond
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