#!/bin/sh
set -e
# get daily (00Z) data from 6-hourly input data

if [ $# -ne 3 ] ; then
  echo "Error in $0: invalid number of arguments $#"
  exit 1
fi

pfx=$1
inp=$2
out=$3

release inp
access  inp ${pfx}_${inp}

rsplit inp ${pfx}_${out} r2 r3 r4

release inp r2 r3 r4