list new files(on specified directory) added on remote ftp server

ftp_new.sh

#/bin/sh

get_files_list()
{
    ftp_db="$1"

    lftp ftp.hrbeu.edu.cn <<EOF

    set ftp:charset GBK
    
    cls -l --time-style='+%d-%b-%Y' /影视/动漫 > $ftp_db

    !echo "------------------------------------------------------------ " >> $ftp_db
    cls -l --time-style='+%d-%b-%Y' /影视/电影/标清 >> $ftp_db

    !echo "------------------------------------------------------------ " >> $ftp_db
    cls -l --time-style='+%d-%b-%Y' /影视/电影/高清 >> $ftp_db

    !echo "------------------------------------------------------------ " >> $ftp_db
    cls -l --time-style='+%d-%b-%Y' /影视/电影/精选全集 >> $ftp_db

    !echo "------------------------------------------------------------ " >> $ftp_db
    cls -l --time-style='+%d-%b-%Y' /影视/电影/恐怖片 >> $ftp_db

    bye
EOF
}

export LC_ALL="en_US.UTF-8"
ftp_db_old=~/.ftp_db

if [ $# -eq 0 ]
then
    if [ -f $ftp_db_old ]
    then
        ftp_db_temp=`mktemp`
        get_files_list $ftp_db_temp
        diff -rupN $ftp_db_old $ftp_db_temp | grep "^+" | awk '{print $6 " " $7}'
        if [ ! $? -eq 0 ]
        then
            echo "There is no new movies"
        fi
        rm $ftp_db_temp
    else
        echo "The ftp_db must be init firstly"
        exit 1
    fi

    exit 0
fi

# check wether the cache is outdate or not
# if the cache is not updated today, then it is outdate
# if the cache is updated then use the local one or update before use
today=$(date --rfc-3339=date)
file_date=$(stat .ftp_db | awk '{if ($1 == "Modify:" )print $2}')
if [ $today != $file_date ]
then
    get_files_list $ftp_db_old
fi

while getopts ":i u d a m s:" ARGUMENT 2>/dev/null
do
    case $ARGUMENT in
        i)
            # init local list cache
            if [ -f $ftp_db_old ]
            then
                echo "The ftp_db has already be inited!"
                exit 1
            else
                get_files_list $ftp_db_old
                echo "init the ftp_db done"
            fi
            ;;
        u)
            # forcus to update local lists cache
            get_files_list $ftp_db_old
            echo "update the ftp_db done"
            ;;
        s)
            # search files by name
            echo "Search $OPTARG result:"
            grep "$OPTARG" $ftp_db_old
            ;;
        d)
            # list new files uploaded today
            dyear=`date | awk '{print $6}'`
            dmonth=`date | awk '{print $2}'`
            dday=`date | awk '{print $3}'`
            key="${dday}-${dmonth}-${dyear}"
            # grep "$dday-$dmonth-$dyear" $ftp_db_temp | awk '{print $7}'
            awk -v akey=${key} '{ if ($6 == akey ) print $6 $7 }' $ftp_db_old
            ;;
        m)
            # list new files uploaded this month
            dyear=`date | awk '{print $6}'`
            dmonth=`date | awk '{print $2}'`
            # grep "$dmonth-$dyear" $ftp_db_old | awk '{print $7}'
            awk '{print $6 "-" $7}' $ftp_db_old | \
                awk -v ayear=${dyear} -v amonth=${dmonth} \
                ' BEGIN {FS="-"} {if($2 == amonth &&  $3 == ayear) print $4}'
            ;;
        a)
            # list all in cache
            if [ -f $ftp_db_old ]
            then
                cat $ftp_db_old
            else 
                echo "There is no cache file!"
                exit 1
            fi
            ;;
        \?)
            echo "invild paramters"
            ;;
    esac   
done

exit 0