#!/bin/sh

TMP_DIR="${tmp}"

if [ $# -lt 1 ]; then
    echo "$0: *** ERROR: ***" >&2
    echo "Please supply a list of input file names" >&2
    echo "on the command line." >&2
    echo "Usage:" >&2
    echo "    something-that-produces-data | `basename $0`" >&2
    echo "    `basename $0` < file.dat " >&2
    echo "    `basename $0` file1.dat [file2.mols ...]" >&2
    exit 1
fi

set -ue
set +x

echo ${1+"$@"}