Linux sed-多线查找和更换

我正试图使用sed从本质上取消对javatomcat的server.xml文件中的一段代码的注释。我在使用多行查找/替换来删除XML注释标记时遇到问题。以下是server.xml文件的一个片段：

<!-- Define an SSL/TLS HTTP/1.1 Connector on port 8443
     This connector uses the NIO implementation. The default
     SSLImplementation will depend on the presence of the APR/native
     library and the useOpenSSL attribute of the
     AprLifecycleListener.
     Either JSSE or OpenSSL style configuration may be used regardless of
     the SSLImplementation selected. JSSE style configuration is used below.
-->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
           maxThreads="150" SSLEnabled="true">
    <SSLHostConfig>
        <Certificate certificateKeystoreFile="conf/localhost-rsa.jks"
                     type="RSA" />
    </SSLHostConfig>
</Connector>
-->
<!-- Define an SSL/TLS HTTP/1.1 Connector on port 8443 with HTTP/2
     This connector uses the APR/native implementation which always uses
     OpenSSL for TLS.
     Either JSSE or OpenSSL style configuration may be used. OpenSSL style
     configuration is used below.
-->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol"
           maxThreads="150" SSLEnabled="true" >
    <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
    <SSLHostConfig>
        <Certificate certificateKeyFile="conf/localhost-rsa-key.pem"
                     certificateFile="conf/localhost-rsa-cert.pem"
                     certificateChainFile="conf/localhost-rsa-chain.pem"
                     type="RSA" />
    </SSLHostConfig>
</Connector>
-->

<!-- Define an AJP 1.3 Connector on port 8009 -->
<!--
<Connector protocol="AJP/1.3"
           address="::1"
           port="8009"
           redirectPort="8443" />
-->

下面是我尝试执行查找/替换的众多尝试之一的示例：

sed '/    <!--\n    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol/i test' /opt/tomcat/conf/server.xml
sed '/<!--\n<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol/i test' /opt/tomcat/conf/server.xml
sed '/*<!--\n*<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol/i test' /opt/tomcat/conf/server.xml

---

sed'/不确定您的确切xml文件格式。给你举个例子作为参考

示例XML文件：

$ cat foo.xml
<!-- real
     comment
-->

<!--
<foo a="1"
     uncomment="yes"
     b="2" />
</foo>
-->

<!--
<foo a="1"
     uncomment="no"
     b="2" />
</foo>
-->

<!--
<foo a="1"
     uncomment="yes"
     b="2" />
</foo>
-->

$ cat foo.sed
/^<!--$/! {
  p; b
}

h
:a
n; H
/^-->$/! ba

x
/uncomment="yes"/ {
  s/^<!--\n//
  s/\n-->$//
}

p

$ sed -nf foo.sed foo.xml
<!-- real
     comment
-->

<foo a="1"
     uncomment="yes"
     b="2" />
</foo>

<!--
<foo a="1"
     uncomment="no"
     b="2" />
</foo>
-->

<foo a="1"
     uncomment="yes"
     b="2" />
</foo>

结果：

$ cat foo.xml
<!-- real
     comment
-->

<!--
<foo a="1"
     uncomment="yes"
     b="2" />
</foo>
-->

<!--
<foo a="1"
     uncomment="no"
     b="2" />
</foo>
-->

<!--
<foo a="1"
     uncomment="yes"
     b="2" />
</foo>
-->

$ cat foo.sed
/^<!--$/! {
  p; b
}

h
:a
n; H
/^-->$/! ba

x
/uncomment="yes"/ {
  s/^<!--\n//
  s/\n-->$//
}

p

$ sed -nf foo.sed foo.xml
<!-- real
     comment
-->

<foo a="1"
     uncomment="yes"
     b="2" />
</foo>

<!--
<foo a="1"
     uncomment="no"
     b="2" />
</foo>
-->

<foo a="1"
     uncomment="yes"
     b="2" />
</foo>

$sed-nf foo.sed foo.xml

（用来详细了解它是如何工作的。）
我最终用两种不同的SED得到了它：

## find the first 2 lines and replace with one to remove the start-comment:
sed -z 's/    <!--\n    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"/    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"/' /opt/tomcat/conf/server.xml

## find the whole block (had to make sure I was removing the right closing-comment on the right block) and replace with the whole block, with modifications included, and comment removed:
sed -z 's/    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"\n               maxThreads="150" SSLEnabled="true">\n        <SSLHostConfig>\n            <Certificate certificateKeystoreFile="conf\/localhost-rsa.jks"\n                         type="RSA" \/>\n        <\/SSLHostConfig>\n    <\/Connector>\n    -->/    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"\n               maxThreads="150" SSLEnabled="true">\n        <SSLHostConfig>\n            <Certificate certificateKeystoreFile="conf\/tomcat.p12"\n                         certificateKeystorePassword="soopersecurepasswordtest"\n                         type="RSA" \/>\n        <\/SSLHostConfig>\n    <\/Connector>/' /opt/tomcat/conf/server.xml

##找到前两行并替换为一行以删除开始注释：
sed-z的//\n\n\n\n/'/opt/tomcat/conf/server.xml
您确定要使用sed之类的正则表达式工具来解析XML吗？不一定——我只是尝试使用现有容器中烘焙的内容，而不必加载perl/python之类的内容。我们正在努力使容器尽可能薄。你还有别的建议吗？答案字面上提到了Tomcata，答案删除了我只想删除一组的所有注释标记。我实现sed的方式几乎相同，我只是删除了所有的行开始符号（^），因为它们在我的server.xml中间隔了一点。它返回了整个文件，没有改变。