如何在文件中搜索模式并在命令行中删除Unix中的行？

StackOverflow https://stackoverflow.com/questions/1422382

  •  07-07-2019
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题

我需要在文件中搜索模式。 例如，文件的内容如下：

3555005!K!00630000078!C!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!47001231000000!0!336344324!1!1!POST!USAGE!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!

我想在这里搜索！D！并且该行中的第7个字段小于系统日期，然后我想删除该行并保存该文件。

这可能吗？

有帮助吗？

解决方案

如果您更喜欢 AWK ... 

awk -f logstrip.awk  in.log > out.log

其中logstrip.awk看起来像

# *** Simple AWK script to delete lines from log file ***
#    Rule: keep all lines except these that have their 2nd
#          field equal to "D" and their 7th field more than
#          current date time


BEGIN {
    FS = "!";   #delimiter

    stopDate = systime();
    # stopDate = 47001231000001;   for test purposes

    deletedLineCtr = 0;   #diagnostics counter, unused at this time
}

{
  if (match($2, "D") && ($7 < stopDate) ) {
    deletedLineCtr++;
  }
  else
     print <*>
}

应该这样做。

但请注意，您的字段＃7包含奇数日期格式。我认为我认识到最近的一个纪元价值（123 ...），但它之前是4个明显不相关的数字。在与StopDate

进行比较之前，可以轻松删除这些内容

其他提示

这样的事情应该可以解决问题......你可能想要解析时间，如果这不是你如何格式化字段

perl -ne '/^([^!]+!){6}([^!]+).*/; print if $2 < time && /!D!/;'

基于 mjv的答案，但简化并使用（假设）日期的第五个字段（为便于阅读而分为两行）：

awk -F! 'BEGIN {stopdate=strftime("%Y%m%d%H%M%S",systime())} 
         $2 != "D" || $5 >= stopdate {print}' file.log > newfile.log

我测试了文件中的样本数据

3555005!K!00630000078!C!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090912000000!0!336344324!1!1!POST!vijay!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090912000000!0!336344324!1!1!POST!vijay!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!D!16042296!DUMMY!20090805235959!0!20090917000000!0!336344324!1!1!POST!USAGE!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090919000000!0!336344324!1!1!POST!USAGE!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090914000000!0!336344324!1!1!POST!vijay!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090915000000!0!336344324!1!1!POST!vijay!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090913000000!0!336344324!1!1!POST!vijay!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090912000000!0!336344324!1!1!POST!USAGE!336344324!0!
3555005!C!336344324!1!!!EUR!1!1!!I!
3555005!S!00630000078!20090805172515!LF010300!
3555005!K!204042880166840!I!20090805235959!47001231000000!16042296!336344324!A!1!ENG!0!00630000078!NO!00630000078!
3555005!D!16042296!DUMMY!20090805235959!0!20090912000000!0!336344324!1!1!POST!USAGE!336344324!0!

但它正在删除包含！D！的所有行。 我使用了以下awk脚本

# *** Simple AWK script to delete lines from log file ***
#    Rule: keep all lines except these that have their 2nd
#    field equal to "D" and their 7th field more than
#          current date time
BEGIN {
       FS = "!";
         #delimiter
         stopDate = "date +%Y%m%d%H%M%S";
         # stopDate = 47001231000001;  for test purposes
         deletedLineCtr = 0;   #diagnostics counter, unused at this time
      }
      {
      if ( match($2, "D") && ($7 < stopDate) )
          {
           deletedLineCtr++;
          }
      else
           print <*>
      }

我做错了吗？

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