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Re: How to overwrite a symbolic link?


From: Eric Blake
Subject: Re: How to overwrite a symbolic link?
Date: Fri, 07 May 2010 09:16:10 -0600
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On 05/07/2010 09:02 AM, Peng Yu wrote:
> Suppose I need to modify one primary file slightly to do something a
> little bit different. But I still need to do the original job,
> therefore I need to keep it the original M files. I can copy the whole
> directory and then modify one file in the newly copied N files. But
> I'll lose track of which file has been changed later on, which is
> important to me.

Consider using a version control system.  Track the contents of your
directory under your favorite VCS, like git, and then you can use
version control commands to generate the delta for both primary and
secondary files across any state that you committed.

Or, for a one-shot solution, you could use a BSD union mount, where the
difference between the mount overlay and the original directory shows
exactly what was modified.

But overloading bash's > and >> operators is not possible.

-- 
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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