openbios/openboot/tools/move-if-changed.sh

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• Hash : 1a08f436
  Author :
  Date : 2010-08-25T09:23:17
  

  change to well-formed svn directory structure. git-svn-id: svn://coreboot.org/openboot/trunk@2 4486e004-3823-0410-90c7-fb508cc143bb

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• tools/move-if-changed.sh

• #!/bin/sh
  #
  # move-if-changed <file1> <file2>
  # 
  # if (file2 != file1) then copy file2 to file1.
  #
  src=$1
  dest=$2
  tmp1=$src.tmp
  tmp2=$dest.tmp
  
  RM="/usr/bin/rm -f"
  GREP="/usr/bin/grep"
  SCCS="/usr/ccs/bin/sccs"
  CP="/usr/bin/cp -p"
  TOUCH="/usr/bin/touch"
  CMP="/usr/bin/cmp -s"
  CHMOD="/usr/bin/chmod"
  
  $RM $tmp1 $tmp2
  $GREP -v '#' $src > $tmp1
  $GREP -v '#' $dest > $tmp2
  $TOUCH $tmp1 $tmp2
  if $CMP $tmp1 $tmp2; then
  	/bin/true
  else
  	dir=`dirname $src`;
  	fname=`basename $src`;
  	here=`pwd`;
  	cd $dir
  	$CHMOD -w $fname
  	$RM SCCS/p.$fname
  	$SCCS edit $fname > /dev/null
  	cd $here
  	$CP -f $dest $src
  fi
  $RM $tmp1 $tmp2 $dest
  exit 0
  

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