view build-aux/move-if-change @ 21188:833667470c9b

delete unused X_CAST macro * oct-conf-post.in.h (X_CAST): Delete macro definition.
author John W. Eaton <jwe@octave.org>
date Thu, 04 Feb 2016 00:32:05 -0500
parents 5e50f25f245a
children 1bca6c72d2b1
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 1>&2
    rm -f $1
  else
    mv -f $1 $2
  fi
else
  mv -f $1 $2
fi