:#!/bin/shPATH="BINDIR:$PATH"; export PATHcheck=0pipe=0opt=files=keep=0res=0old=0new=0block=1024# block is the disk block size (best guess, need not be exact)warn="(does not preserve modes and timestamp)"tmp=/tmp/zfoo.$$echo hi > $tmp.1echo hi > $tmp.2if test -z "`(${CPMOD-cpmod} $tmp.1 $tmp.2) 2>&1`"; then  cpmod=${CPMOD-cpmod}  warn=""fiif test -z "$cpmod" && ${TOUCH-touch} -r $tmp.1 $tmp.2 2>/dev/null; then  cpmod="${TOUCH-touch}"  cpmodarg="-r"  warn="(does not preserve file modes)"fi# check if GZIP env. variable uses -S or --suffixgzip -q $tmp.1ext=`echo $tmp.1* | sed "s|$tmp.1||"`rm -f $tmp.[12]*if test -z "$ext"; then  echo znew: error determining gzip extension  exit 1fiif test "$ext" = ".Z"; then  echo znew: cannot use .Z as gzip extension.  exit 1fifor argdo  case "$arg" in  -*)     opt="$opt $arg"; shift;;   *)     break;;  esacdoneif test $# -eq 0; then  echo "recompress .Z files into $ext (gzip) files"  echo usage: `echo $0 | sed 's,^.*/,,'` "[-tv9KP]" file.Z...  echo "  -t tests the new files before deleting originals"  echo "  -v be verbose"  echo "  -9 use the slowest compression method (optimal compression)"  echo "  -K keep a .Z file when it is smaller than the $ext file"  echo "  -P use pipes for the conversion $warn"  exit 1fiopt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`case "$opt" in  *t*) check=1; opt=`echo "$opt" | sed 's/t//g'`esaccase "$opt" in  *K*) keep=1; opt=`echo "$opt" | sed 's/K//g'`esaccase "$opt" in  *P*) pipe=1; opt=`echo "$opt" | sed 's/P//g'`esacif test -n "$opt"; then  opt="-$opt"fifor i do  n=`echo $i | sed 's/.Z$//'`  if test ! -f "$n.Z" ; then    echo $n.Z not found    res=1; continue  fi  test $keep -eq 1 && old=`wc -c < "$n.Z"`  if test $pipe -eq 1; then    if gzip -d < "$n.Z" | gzip $opt > "$n$ext"; then      # Copy file attributes from old file to new one, if possible.      test -n "$cpmod" && $cpmod $cpmodarg "$n.Z" "$n$ext" 2> /dev/null    else      echo error while recompressing $n.Z      res=1; continue    fi  else    if test $check -eq 1; then      if cp -p "$n.Z" "$n.$$" 2> /dev/null || cp "$n.Z" "$n.$$"; then	:      else	echo cannot backup "$n.Z"        res=1; continue      fi    fi    if gzip -d "$n.Z"; then      :    else      test $check -eq 1 && mv "$n.$$" "$n.Z"      echo error while uncompressing $n.Z      res=1; continue    fi    if gzip $opt "$n"; then      :    else      if test $check -eq 1; then	mv "$n.$$" "$n.Z" && rm -f "$n"        echo error while recompressing $n      else	# compress $n  (might be dangerous if disk full)        echo error while recompressing $n, left uncompressed      fi      res=1; continue    fi  fi  test $keep -eq 1 && new=`wc -c < "$n$ext"`  if test $keep -eq 1 -a `expr \( $old + $block - 1 \) / $block` -lt \                         `expr \( $new + $block - 1 \) / $block`; then    if test $pipe -eq 1; then      rm -f "$n$ext"    elif test $check -eq 1; then      mv "$n.$$" "$n.Z" && rm -f "$n$ext"    else      gzip -d "$n$ext" && compress "$n" && rm -f "$n$ext"    fi    echo "$n.Z smaller than $n$ext -- unchanged"  elif test $check -eq 1; then    if gzip -t "$n$ext" ; then      rm -f "$n.$$" "$n.Z"    else      test $pipe -eq 0 && mv "$n.$$" "$n.Z"      rm -f "$n$ext"      echo error while testing $n$ext, $n.Z unchanged      res=1; continue    fi  elif test $pipe -eq 1; then    rm -f "$n.Z"  fidoneexit $res