[R] identicalFiles(filename1, filename2)?

Prof Brian Ripley ripley at stats.ox.ac.uk
Fri Aug 15 07:30:09 CEST 2014

On 14/08/2014 23:57, William Dunlap wrote:
> Is there a function in core R that takes 2 strings and returns TRUE if
> they refer to the same file?  (If either does not refer to a file, I
> think it would be fine if it returned FALSE.)

No, but equality for normalizePath() works well enough on most OSes 
(Unix-alikes do follow links, although if you have a file system mounted 
in multiple places I have no idea how well it copes).

> Compariing inode/device numbers on Unix-like systems and the output of
> normalizePath on Windows would probably do it.   Comparing files on
> non-native file systems can mess things up so perhaps we should not
> promise much.
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
1 South Parks Road, Oxford OX1 3TG, UK

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