xmlstarlet to get and parse the data between tags

Question

I wanted the get data from xml tags to script file, but data is in hexadecimal characters line(& >) which needs are to be converted to form (&& >).

Example:

<project>
<code><shell> if a &amp;&amp; b </shell></code>
</project>

I am able to extract tags using command

xmlstarlet edit --update 'project/code/shell' --value "$DATA" shell.xml > shell.sh

cat shell.sh

Actual:

if a && b

Expected:

if a && b

How to acheive expected result?

Answer 1

To unescape special XML characters:

echo ' if a && b ' | xmlstarlet unescape

Output:

 if a && b 

---

cat file.xml | xmlstarlet unescape

Output:

<project>
<code><shell> if a && b </shell></code>
</project>