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通过搜索模式删除以 - 作为行分隔符分隔的内容

tag-icon • tag-icon bash shell-script
通过搜索模式删除以 - 作为行分隔符分隔的内容

我有一个包含以下输入的文件。

----------
          ID: alternatives_create_editor
    Function: alternatives.install
        Name: editor
      Result: None
     Comment: Alternative will be set for editor to /usr/bin/vim.basic with priority 100
     Started: 10:45:49.115459
    Duration: 0.78 ms
     Changes:
----------
          ID: hosts_1
    Function: host.present
        Name: ip6-allnodes
      Result: None
     Comment: Host ip6-allnodes (ff02::1) already present
     Started: 10:45:49.127667
    Duration: 1.117 ms
     Changes:

----------
          ID: sfrsyslog_fix_logrotate
    Function: file.managed
        Name: /etc/logrotate.d/rsyslog
      Result: None
     Comment: The file /etc/logrotate.d/rsyslog is set to be changed
     Started: 10:45:50.771278
    Duration: 12.751 ms
     Changes:
----------

我的目标是删除 Comment: contains 已经存在的整个部分。

我试过，grep -B 5 -A 4 'already present' FILE1 > FILE2。

然后，

diff -y FILE1 FILE2 | grep '<' | sed 's/

在此输出中我得到如下所示，

          ID: alternatives_create_editor
    Function: alternatives.install
        Name: editor
      Result: None
     Comment: Alternative will be set for editor to /usr/bin/
     Started: 10:45:49.115459
    Duration: 0.78 ms
     Changes:

----------
          ID: sfrsyslog_fix_logrotate
    Function: file.managed
        Name: /etc/logrotate.d/rsyslog
      Result: None
     Comment: The file /etc/logrotate.d/rsyslog is set to be
     Started: 10:45:50.771278
    Duration: 12.751 ms
     Changes:
----------

问题是Comment: section没有给出完整的线路。请帮忙。谢谢

答案1

更直接的是使用单个 GNU awk 命令：

awk 'BEGIN{RS=ORS="----------\n"};!/Comment:[^\n]*already present/' file

它只是将记录分隔符设置为十虚线，如果记录包含Comment:[^\n]*already present，它会抑制该记录。[^\n]*表示“不是换行符”，因此如果记录有already presentinChanges:但不包含 in ，则不会抑制该记录Comment:。

输出：

----------
          ID: alternatives_create_editor
    Function: alternatives.install
        Name: editor
      Result: None
     Comment: Alternative will be set for editor to /usr/bin/vim.basic with priority 100
     Started: 10:45:49.115459
    Duration: 0.78 ms
     Changes:
----------
          ID: sfrsyslog_fix_logrotate
    Function: file.managed
        Name: /etc/logrotate.d/rsyslog
      Result: None
     Comment: The file /etc/logrotate.d/rsyslog is set to be changed
     Started: 10:45:50.771278
    Duration: 12.751 ms
     Changes:
----------

如果您没有 GNU awk，则上述内容可能不起作用，因为 POSIX 没有定义多字符记录分隔符的行为。所以我留下了这个便携式替代方案：

awk '/Comment:.*already present/{p=1}
    /^-{10}$/{
        if(p!=1){printf "%s",lines}
        p=0
        lines=""
    }
    {lines=lines $0 RS}
' file

答案2

另一个awk解决方案：

awk 'BEGIN{RS=ORS="----------\n"} $0 !~ /already present/' file

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