#!/bin/bash

echo

if [ $# -ne 1 ]; then
    echo "Usage: $0 <root_directory to search>"
    echo
    exit 1
fi

TARGET_DIR="$1"

find "$TARGET_DIR" -type f \( -name 'WAVE*' -o -name 'CHG*' \) -exec rm -f {} +

echo "Files were deleted."
echo