xml - 如何在 Linux 中解析相同命名的 XML 元素内容？

Question

大家好。我正在尝试编写一个编辑 xml 文件的脚本。不幸的是，文件中有相同的命名标签:

<phase1>
 <ikeid>1</ikeid>
 <iketype>ikev1</iketype>
 <mode>main</mode>
 <myid_type>myaddress</myid_type>
 <myid_data/>
 <peerid_type>peeraddress</peerid_type>
 <peerid_data/>
 <lifetime>28800</lifetime>
 <pre-shared-key>lol</pre-shared-key>
</phase1>

<phase1>
 <ikeid>2</ikeid>
 <iketype>ikev1</iketype>
 <mode>main</mode>
 <myid_type>any</myid_type>
 <myid_data/>
 <peerid_type>address</peerid_type>
 <peerid_data/>
 <lifetime>20000</lifetime>
 <pre-shared-key>lel</pre-shared-key>
</phase1>

我需要分别访问这两个“phase1” block 并使用 xmllint 编辑它们。简而言之，我想要这样的输出:

<phase1>
 <ikeid>1</ikeid>
 <iketype>ikev1</iketype>
 <mode>main</mode>
 <myid_type>myaddress</myid_type>
 <myid_data/>
 <peerid_type>peeraddress</peerid_type>
 <peerid_data/>
 <lifetime>28800</lifetime>
 <pre-shared-key>lol</pre-shared-key>
</phase1>

<phase1>
 <ikeid> I EDITTED THIS PART</ikeid>
 <iketype>ikev1</iketype>
 <mode>THIS IS ALSO EDITTED</mode>
 <myid_type>any</myid_type>
 <myid_data/>
 <peerid_type>address</peerid_type>
 <peerid_data/>
 <lifetime>HELP</lifetime>
 <pre-shared-key>lel</pre-shared-key>
</phase1>

谢谢。

Answer 1

我想通了。如下所示:

xmllint --shell file.xml
cd /some/path/phase1[ikeid='1']/lifetime

此命令到达包含“ikeid”值 1 的“phase1”的“lifetime”元素。