首页 > 解决方案 > 如何从linux shell脚本中的文本文件合并同一行中的两行

问题描述

从 Nagios 我使用 wget 命令下载了它的 html 文件,然后我使用以下代码将该 htmlfile 转换为 Textfile:

html2text -width 180 file.html >a.txt

然后我剪掉了前 10 行,因为我不想要那个文本,我得到了低于文本文件输出

awk 'NR > 10 { print }'a.txt > b.txt

我必须将两行合并为单行,而不是所有行,仅用于 b.txt 文件的特定输出。注意:文本文件包含 N 行

这里是 b.txt 文件输出:

                      DISK OK - free space:          CRITICAL
01-08-2018 07:05:05   Service Required     Critical  CPU:loadaverage 6.0%                    

01-08-2018 07:10:25   Service Alert        Critical  memoryUsage

                       DISK OK - free space: 
02-08-2018 01:05:2018  Service Alert       Warning   memoryUsage

                                                      CRITICAl:outstanding alert attention 
02-08-2018 02:05:2018  Service Alert        Critical  required 

预期输出:

01-08-2018 07:05:05   DISK OK - free space:Service Required  Critical    CRITICALservice requiredCPU:loadaverage 6.0%

01-08-2018 07:10:25   Service Alert                          Critical    memoryUsage

02-08-201801:05:2018  DISK OK - free space:Service Alert     Warning     memoryUsage

02-08-2018 02:05:2018 Service Alert                         Critical     CRITICAL:outstanding alert attention required

提前致谢

标签: linuxbashshell

解决方案


您可以使用 awk 将行合并在一起:

awk '
  /^ +/{                     # For lines starting with spaces,
    gsub(/^ +/," ");         # Replace these multiple spaces with only one
    a=a $0;                  # Store the line into the variable a
    next                     # Continue with the next line
  }
  {                          # For lines not starting with spaces
    $3=$3 a;                 # Append the variable a to the third element
    a=""                     # Clear variable a
  }
  1                          # Print the current line
' b.txt

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