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executable file 15 lines (13 sloc) 0.243 kb
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#!/bin/sh
#
# Like cp $1 $2, but if the files are the same, do NOTHING.
# 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
  else
cp -f $1 $2
  fi
else
cp $1 $2
fi
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