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如何累积过去x天的数据

tag-icon • tag-icon bash shell-script awk date
如何累积过去x天的数据

问：对于问题的论证，假设今天是 26/03/15。我如何“累积”过去 5 天的数据。

但这些日期只是一个例子。理想情况下，我希望能够积累最后的数据X天，一旦积累起来，我会通过电子邮件将积累的信息发送出去。我会每隔一天执行一次这个过程z通过 crontabs 帮助几周。

这是代码：

awk_variables=`echo "$line" | awk -F, '( $13 == "*OUT*" )||( $13 == "*IN*" ){print $1,$5,$10,$12,$13}' my_file.csv > /directory/some_directory/non_sorted_filtered.csv`

cat /directory/some_directory/non_sorted_filtered.csv | while read line
do

        awk_variables="$line"
        awk_variables_array=($awk_variables)

        awk_time=${awk_variables_array[0]}
        awk_container_ID=${awk_variables_array[1]}
        awk_scan_count=${awk_variables_array[2]}
        awk_part_number=${awk_variables_array[3]}
        awk_direction==${awk_variables_array[4]}

        awk_part_number_edited="${awk_part_number:3}"
        awk_direction_edited="${awk_direction:1}"

        awk_date=@''$awk_time
        date=`date -d $awk_date +"%d/%m/%Y"`


        echo -e "Date:$date   Scan No:$awk_scan_count   Part No:$awk_part_number_edited  Direction:$awk_direction_edited"


done

这是输出：

Date:19/03/2015   Scan No:12   Part No:XXXX1234567  Direction:*OUT*
Date:19/03/2015   Scan No:13   Part No:XXXX1234567  Direction:*OUT*
Date:19/03/2015   Scan No:14   Part No:XXXX1234567  Direction:*OUT*
Date:19/03/2015   Scan No:17   Part No:XXXX1234567  Direction:*OUT*
Date:19/03/2015   Scan No:18   Part No:WTTO275  Direction:*OUT*
Date:19/03/2015   Scan No:19   Part No:WTTO275  Direction:*OUT*
Date:19/03/2015   Scan No:20   Part No:WTTO275  Direction:*OUT*
Date:20/03/2015   Scan No:22   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:23   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:24   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:25   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:26   Part No:XXXX1234567  Direction:*OUT*
Date:24/03/2015   Scan No:37   Part No:WTTO523  Direction:*OUT*
Date:25/03/2015   Scan No:43   Part No:WTTO548  Direction:*OUT*
Date:25/03/2015   Scan No:44   Part No:SP-TMX6BP  Direction:*OUT*
Date:25/03/2015   Scan No:45   Part No:WTTO548  Direction:*OUT*
Date:25/03/2015   Scan No:49   Part No:02102  Direction:*OUT*
Date:25/03/2015   Scan No:50   Part No:02103  Direction:*OUT*
Date:25/03/2015   Scan No:51   Part No:02118  Direction:*OUT*
Date:25/03/2015   Scan No:52   Part No:02132  Direction:*OUT*
Date:25/03/2015   Scan No:53   Part No:02133  Direction:*OUT*
Date:25/03/2015   Scan No:54   Part No:02134  Direction:*OUT*
Date:25/03/2015   Scan No:55   Part No:02135  Direction:*OUT*
Date:25/03/2015   Scan No:56   Part No:19178  Direction:*OUT*
Date:25/03/2015   Scan No:57   Part No:19179  Direction:*OUT*

所以我想发送以下数据：

Date:20/03/2015   Scan No:22   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:23   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:24   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:25   Part No:XXXX1234567  Direction:*OUT*
Date:20/03/2015   Scan No:26   Part No:XXXX1234567  Direction:*OUT*
Date:24/03/2015   Scan No:37   Part No:WTTO523  Direction:*OUT*
Date:25/03/2015   Scan No:43   Part No:WTTO548  Direction:*OUT*
Date:25/03/2015   Scan No:44   Part No:SP-TMX6BP  Direction:*OUT*
Date:25/03/2015   Scan No:45   Part No:WTTO548  Direction:*OUT*
Date:25/03/2015   Scan No:49   Part No:02102  Direction:*OUT*
Date:25/03/2015   Scan No:50   Part No:02103  Direction:*OUT*
Date:25/03/2015   Scan No:51   Part No:02118  Direction:*OUT*
Date:25/03/2015   Scan No:52   Part No:02132  Direction:*OUT*
Date:25/03/2015   Scan No:53   Part No:02133  Direction:*OUT*
Date:25/03/2015   Scan No:54   Part No:02134  Direction:*OUT*
Date:25/03/2015   Scan No:55   Part No:02135  Direction:*OUT*
Date:25/03/2015   Scan No:56   Part No:19178  Direction:*OUT*
Date:25/03/2015   Scan No:57   Part No:19179  Direction:*OUT*

注意：每天的扫描次数会有所不同。有时它可能是 100（例如）有时它会是 0。

答案1

这更像是一个提示，而不是解决方案。如果我没记错的话，您可以使用ISO 8601日期格式和string compare。类似这样的方法可能对您有用：

iso_moment=$(date -u +"%Y-%m-%dT%H:%M:%SZ" -d "-5 days")
iso_date=$(date -d $awk_date +"%Y-%m-%dT%H:%M:%SZ")

if [[ "${iso_date}" > "${iso_moment}" ]]
then
    echo -e "Date:$date   Scan No:$awk_scan_count   Part No:$awk_part_number_edited  Direction:$awk_direction_edited"
fi

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