它有可能在grep之后设置一个断线吗？

Question

我有这样的代码：

 scan-codes | grep -i '[!]\| url:\|started\|Aborted' | grep -v 'Effective\|style\|WARNING\|The version' 

输出：

        [+] Started: Sat Feb 19 05:21:00 2022
             | [!] 1 vulnerability identified:
             | [!] Title: Cookie Notice & Compliance for GDPR / CCPA < 2.1.2 - Admin+ Stored Cross-Site Scripting
    ############## need break line here ##############
             | [!] 1 vulnerability identified:
             | [!] Title: WPBakery Page Builder < 6.4.1 - Authenticated Stored Cross-Site Scripting (XSS)
############## need break line here ##############
            WARNING: Nokogiri was built against libxml version 2.9.10, but has dynamically loaded 2.9.12

我想在grep后面放一条断线(比如\n)。这是扫描，所以我不能更改文件。

Answer 1

建议使用单个awk脚本：

如果匹配合并了2个grep条件，则打印当前行+每2行换行：

  awk '/\[!\]| url:|started|Aborted/ && !/Effective|style|WARNING|The version/ {ln++; print $0 (ln % 2) ? "\n": "";}'

解释

/\[!\]| url:|started|Aborted/正线匹配条件!/Effective|style|WARNING|The version/负线匹配条件

{ # For each line passing all conditions
   ln++; # count printed line
   newLineMaker = (ln % 2) ? "\n": ""; # New line marker any 2nd line
   print $0 newLineMaker; # print 
}