Shell Programming and Scripting

#! /bin/ksh

NAME=$(basename ${0})
FILE=$(mktemp --tmpdir=/tmp ${NAME}XXXXXX)

trap "rm -f ${FILE}.\*" EXIT

#-------------------------------------------------------------------------------

comparefile=
monthprior=
movetodir=
verbose=

while getopts :d:f:p:v OPT; do
    case "${OPT}" in

        d)  if [[ ! -d "${OPTARG}" ]]; then
                print -u2 ${NAME}: not a directory: "${OPTARG}"
                exit 1
            fi

            if [[ ! -w "${OPTARG}" || ! -x "${OPTARG}" ]]; then
                print -u2 ${NAME}: permission denied: "${OPTARG}"
                exit 1
            fi

            movetodir="${OPTARG}"
            ;;

        f)  if [[ "${OPTARG}" != - && ! -e "${OPTARG}" ]]; then
                print -u2 -- ${NAME}: no such file or directory - "${OPTARG}"
                exit 1
            fi

            comparefile="${OPTARG}"
            ;;

        p)  if [[ "${OPTARG}" != [1-9][0-9]* ]]; then
                print -u2 ${NAME}: invalid number of months: "${OPTARG}"
                exit 1
            fi

            monthsprior=${OPTARG}
            ;;


        v)  verbose=verbose ;;

        *)  print -u2 -- "USAGE ${NAME} [-p <monthsprior>] [-c <comparefile] [-v] dir..."
            exit 1
            ;;
    esac
done

shift $(expr ${OPTIND} - 1)

if [[ -z "${movetodir}" ]]; then
    print -u2 -- ${NAME}: missing destination directory
    exit 1
fi

#-------------------------------------------------------------------------------
# build list of YYYY/MMs to process

current=$(date +%Y/%m)

typeset -Z4 Y=${current%/*}
typeset -Z2 M=${current#*/}

while [[ 0 -lt ${monthsprior} ]]; do
    (( monthsprior = monthsprior - 1 ))

    (( M = M - 1 ))

    if [[ ${M} -lt 1 ]]; then
        M=12
        (( Y = Y - 1 ))
    fi

    print -- ${Y}/${M}
done > ${FILE}.ym

#-------------------------------------------------------------------------------
# validate directories

for dir in "${@}"; do

    if [[ ! -d "${dir}" ]]; then
        print -u2 -- "${dir}:" no such directory
        continue
    fi

    if [[ ! -r "${dir}" || ! -w "${dir}" || ! -x "${dir}" ]]; then
        print -u2 -- "${dir}:" permission denied
        continue
    fi

    print -- "${dir}"
done > ${FILE}.dirs

#-------------------------------------------------------------------------------

grep -v '^#' "${comparefile:--}" | while read key; do

    if [[ -n "${verbose}" ]]; then
        print -- '*' "${key}"
    fi

    for dir in $(< ${FILE}.dirs); do
        if [[ -n "${verbose}" ]]; then
            print -- '/' "${dir}"
        fi

        for ym in $(< ${FILE}.ym); do
            if [[ ! -d "${dir}/${ym}" ]]; then
                continue
            fi

            ls "${dir}/${ym}" \
            | grep "_A${key}[0-9]*.pdf.gz" \
            | while read ${file}; do

                if [[ -n "${verbose}" ]]; then
                    print -- '+' "${ym}/${file}"
                fi

                mv -f "${dir}/${ym}/${file}" "${movetodir}"
            done
        done
    done
done

scriptname -d destinationdirectory -p numberofmonths [ -c comparefile ] dirs....

mv -f "${dir}/${ym}/${file}" "${movetodir}"

print -- mv -f "${dir}/${ym}/${file}" "${movetodir}"