查找最近更新文件的shell脚本

#!/bin/ksh
########################################################
#Date:       2012-12-19
#name:       swiftftp.sh
#decription: 无限循环，每1分钟执行一次，查找当前目录中修改时间超过1分钟但未超过
#            2分钟的文件，ftp到前置上
########################################################


datestr=`date "+%Y%m%d"`
_logname=dynamicftp${datestr}.log
chmod +x *
if [[ ! -f ${_logname} ]];then
    touch ${_logname};
fi

#该函数打印参数1的时间戳
# perl usage: perl -e "$a=1+4;exit($a);"
cal_timestamp()
{
   perl -e '
    use Time::Local;

# get current time
# 参数表示，要求返还minu_num个分钟之前的时间戳yyyymmddhhmm.ss
    $minu_num="$ARGV[0]";
          localtime(time);

       $time1= time -60*$minu_num;
       ($sec,
          $min,
          $hr,
          $mday,
          $mon,
          $yr,
          $wday,
          $yday,
          $isdst)=localtime($time1);

        $yr=$yr+1900;
        $mon=$mon+1;
        $beforetime=sprintf("%d%02d%02d%02d%02d.%02d",$yr,$mon,$mday,$hr,$min,$sec);
        print "$beforetime"
        ' "$1"  #把函数的第一个参数，用这种形式传递给perl
}


#最外层循环
while [[ 1 -eq 1 ]] ; do
# example use of cal_timestamp:
    oneminubef=$( cal_timestamp "1")
    echo "1 minutes before:$oneminubef" >> ${_logname}
    twominubef=$( cal_timestamp "2")
    echo "2 minutes before:$twominubef" >> ${_logname}

    # create two older files
    touch -t $oneminubef oneminubef.tmp
    touch -t $twominubef twominubef.tmp

    #find the file list which is younger than 2 minutes but older than 1 minutes
    #find usage: find　-newer file1 ! file2

    touch tempfile01
    chmod 777 tempfile01
    find . -newer twominubef.tmp ! -newer oneminubef.tmp | grep -v '^./oneminubef.tmp' |grep -v "^./${_logname}" |grep -v "{$0}" > tempfile01

    #read the file and strcat the files
    a=0
    filenames=
    while read line
    do
      line=`echo $line | sed -e 's/^ *//' -e 's/ *$//'`  #去除空格
      length=`echo ${line} | awk '{print length($1);}'`  #计算字符数
      if [[ ${length} -gt 0 ]]; then                     #防止空行
        newline=${line#*/}                               #去除文件名前面的./
        filenames=$filenames" "$newline
        a=`expr $a + 1`
      fi
    done < tempfile01
    rm -rf tempfile01 oneminubef.tmp twominubef.tmp

    echo "files :$filenames" >> ${_logname}


    _username=test
    _passwd=test

    if [[ $a -gt 0 ]]; then
        ftp -in 192.168.93.77 << !
                user ${_username} ${_passwd}
                bi
                mput $filenames
                bye
!
fi

if [[ $? -eq 0 && a -gt 0 ]]; then
                    echo `date`" successfully put $a files on server"  >> ${_logname}
elif [[ a -gt 0 ]]; then
        echo `date`" put files error!" >> ${_logname}
    else
        echo `date`" no files need to be put!" >> ${_logname}
    fi
    sleep 60
done