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RE: Difference between 'svn update' and 'svn checkout'

From: Bob Archer <Bob.Archer_at_amsi.com>
Date: Wed, 16 Nov 2011 09:47:37 -0500

> 2011/11/12 Blair Zajac <blair_at_orcaware.com>:
> > On 11/11/2011 06:41 PM, Andy Levy wrote:
> >>
> >> On Fri, Nov 11, 2011 at 21:12, Welington Rodrigues Braga
> >> <welrbraga_at_welrbraga.eti.br>  wrote:
> >>>
> >>> Hi guys,
> >>>
> >>> I've just started to use Subversion a few months ago and I am really
> >>> are asking me why I had never used it before but it is not the
> >>> reason of my contact. To be honest I am trying to to do a
> >>> post-commit script that automatically sincronizes a given workcopy
> >>> when any of my users commits their modifications to my repository.
> >>>
> >>> Although it's is ok and working fine (at least in my simples test),
> >>> I did not put in production yet because I have a doubt that neither
> >>> Subversion manual or Google were able to answer me. I didn't find
> >>> any difference beetwen 'svn update' and 'svn checkout' commands
> >>> which is the main function of my post-commit script.
> >>>
> >>> Nowadays I'm using 'svn checkout' and it is working, like I said,
> >>> but I'm not sure if I'm losing some functionality with this option.
> >>>
> >>> Can anyone help me and answer my question?
> >>
> >> svn checkout creates a new working copy.
> >>
> >> svn update updates an existing working copy.
> >
> > As Andy said, but there is some special behavior in checkout.  If you
> > run svn checkout on top of an existing working copy it'll work if the
> > URL is the same as the working copy URLs, but otherwise fail, so this
> > may explain the behavior you see.  But if you did
> >
> > svn co $URL1 dir
> > svn co $URL2 dir
> >
> > the second one would fail.
> >
> > It's best to do something like this
> >
> > if test -d dir; then
> >  svn up dir
> > else
> >  svn co $URL dir
> > fi
> >
>
>
> Thanks Andy and Blair. I've already understood this part explained on manual
> so my doubt is considering that a working copy was created and populated
> before, it will only receive changes (never it will send or commit them) and aI
> will not modify he URL.
>
> Considering those points. Will the behavious of both be the same or there
> are any risk of happen something wrong?

If this is running as a post commit hook on the server, I would favor using Update. It will be much faster and accomplish what you want.

BOb
Received on 2011-11-16 15:48:22 CET

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