untouched

#!/usr/bin/env bash
################################################################################
# untouched - determines whether or not a directory has been changed in the
# last N days. All subdirectories and files within the directory are considered.
#
# Version 1
# Matthew Malensek <matt@malensek.net>
################################################################################

verbose=false

print_usage() {
cat <<EOM
Usage: $(basename ${0}) [-v] dir num_days

Determines whether the contents of 'dir' have changed in the last 'num_days'
days.

Additional options:
    -v    Verbose mode. Files and directories that have changed are printed.

Returns:
    zero if no changes were found, nonzero otherwise.

EOM
}

while getopts "v" flag; do
    case ${flag} in
        v) verbose=true ;;
        ?) print_usage; exit 1 ;;
    esac
done
shift $(($OPTIND - 1))

if [[ ${#} -ne 2 ]]; then
    print_usage
    exit 1
fi

dir=${1}
days=${2}

if [[ ! -d "${dir}" ]]; then
    >&2 echo "Directory not found: ${dir}"
    exit 1
fi

changed=$(find "${dir}" -ctime -"${days}")

if [[ "${changed}" == "" ]]; then
    exit 0
else
    if [[ ${verbose} == true ]]; then
        echo "${changed}"
    fi
    exit 1;
fi