How can I replace text only inside of a specific xml block using sed?

Question

There are mutiple port configuration in each XML block in a XML file.

The example below has two port configurations. One in <Server>, another in <Connector>.

I want to change port in <Connector> block only.

In this case, how can I solve this using sed command?

(I need a solution which only uses sed command because it should be run on any unix env.)

(I want to indicate specific block as name. It is not applicable way to change n-th block for matching port text. Because there are more port configurations as the comment in a file.)

server.xml

<?xml version='1.0' encoding='UTF-8'?>
<Server port="8005" shutdown="SHUTDOWN">
  <Service name="Catalina">
    <Connector port="80" protocol="HTTP/1.1"/>
    <Engine name="Catalina" defaultHost="localhost">
      <Host name="localhost" appBase="webapps"/>
    </Engine>
  </Service>
</Server>

[Don't Parse XML/HTML With Regex.](https://stackoverflow.com/a/1732454/3776858) I suggest to use an XML/HTML parser (xmlstarlet, xmllint ...). — Cyrus, Nov 05 '20 at 05:55
@Cyrus It is reasonable. I will find the way of using python. Thanks a lot. — Yoonsung Lee, Nov 05 '20 at 07:26

score 0 · Accepted Answer · edited Nov 15 '20 at 17:36

0

It's not safe at all to replace strings in xml files. You can break syntax, xml structure and it won't permit clever operation like editing properties on node before / after selector and so on...

As @Cyrus suggested : use an xml parser. No matter it is an unix environment. Feel free to make an python or java script or your preferred language for that.

edited Nov 15 '20 at 17:36

marc_s

732,580
175
1,330
1,459

answered Nov 05 '20 at 06:30

Gweltaz Niquel

629
4
14

How can I replace text only inside of a specific xml block using sed?

1 Answers1