如何到grep文本块？ [英] How to grep a block of text?

问题描述

我想从文件中删除特定的服务器块

  *了NameVirtualHost
＆LT;虚拟主机* GT;
的DocumentRoot/应用程序/ MAMP / htdocs目录
服务器名本地主机
＆LT; /虚拟主机＆GT;
＆LT;虚拟主机* GT;
的DocumentRoot/应用程序/ MAMP / htdocs中/基岩/网络
服务器名基岩
＆LT; /虚拟主机＆GT;
＆LT;虚拟主机* GT;
DocumentRoot的的DocumentRoot
服务器名NEWSERVER
＆LT; /虚拟主机＆GT;
 

到目前为止，我已经使用以下，但它似乎并没有给我正确的结果，但对块的每一行，而不是里grep（内部的grep）分别。

 的grep -Vf$（grep的-w -B 2 -A 1'NEWSERVER/应用程序/ MAMP / conf目录/阿帕奇/ httpd.conf中）/应用程序/ MAMP / conf目录/apache/httpd.conf;
 

在以下内容中的上述结果

  *了NameVirtualHost
的DocumentRoot/应用程序/ MAMP / htdocs目录
服务器名本地主机
的DocumentRoot/应用程序/ MAMP / htdocs中/基岩/网络
服务器名基岩
 

虽然不是我想要的以下内容：

  *了NameVirtualHost
＆LT;虚拟主机* GT;
的DocumentRoot/应用程序/ MAMP / htdocs目录
服务器名本地主机
＆LT; /虚拟主机＆GT;
＆LT;虚拟主机* GT;
的DocumentRoot/应用程序/ MAMP / htdocs中/基岩/网络
服务器名基岩
＆LT; /虚拟主机＆GT;
 

解决方案

这是另一个与DIFF与您最初的命令部分：

 差异≤（grep的-w -B 2 -A 1'NEWSERVER'/Applications/MAMP/conf/apache/httpd.conf）/应用程序/ MAMP / conf目录/阿帕奇/ httpd.conf文件| grep的-e'^＆GT; | SED -e'S / ^＆GT; //
 

I want to delete a block of specific server from this file

NameVirtualHost *
<VirtualHost *>
DocumentRoot "/Applications/MAMP/htdocs"
ServerName localhost
</VirtualHost>
<VirtualHost *>
DocumentRoot "/Applications/MAMP/htdocs/bedrock/web"
ServerName bedrock
</VirtualHost>
<VirtualHost *>
DocumentRoot "documentroot"
ServerName newserver
</VirtualHost>

So far I've used the following, but it doesn't seem to give me the proper result, but instead greps for each line of the block (of the inner grep) individually.

grep -vF "$(grep -w -B 2 -A 1 'newserver'/Applications/MAMP/conf/apache/httpd.conf)" /Applications/MAMP/conf/apache/httpd.conf;

The above results in the following:

NameVirtualHost *
DocumentRoot "/Applications/MAMP/htdocs"
ServerName localhost
DocumentRoot "/Applications/MAMP/htdocs/bedrock/web"
ServerName bedrock

While instead I want the following:

NameVirtualHost *
<VirtualHost *>
DocumentRoot "/Applications/MAMP/htdocs"
ServerName localhost
</VirtualHost>
<VirtualHost *>
DocumentRoot "/Applications/MAMP/htdocs/bedrock/web"
ServerName bedrock
</VirtualHost>

解决方案

an other one with diff and parts of your initial command:

diff  <(grep -w -B 2 -A 1 'newserver' /Applications/MAMP/conf/apache/httpd.conf) /Applications/MAMP/conf/apache/httpd.conf  | grep -e '^> ' | sed -e 's/^> //'

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