view build-aux/move-if-change @ 17810:6da521da1c70

preserve cached mxArray_octave_value data while it's still in use (bug #40429) * mex.cc (mxArray_octave_value::as_mxArray): Transplant cached class_name and dims values to new mxArray object. (mxArray_octave_value::mutate): Call as_mxArray.
author John W. Eaton <jwe@octave.org>
date Wed, 30 Oct 2013 19:04:15 -0400
parents b67c2d580a25
children 5e50f25f245a
line wrap: on
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#!/bin/sh
#
# Like mv $1 $2, but if the files are the same, just delete $1.
# Status is 0 if $2 is changed, 1 otherwise.

if test -r $2; then
  if cmp $1 $2 > /dev/null; then
    echo $2 is unchanged
    rm -f $1
  else
    mv -f $1 $2
  fi
else
  mv -f $1 $2
fi