xmlstarlet:tldr:9e401

The command "xmlstarlet [un]escape ${string}" is used to manipulate XML data. Here's a breakdown of its components:

• "xmlstarlet": This is the name of the command-line tool being used, which is called "xmlstarlet". It provides various facilities for working with XML files.

• "[un]escape": This is an option that specifies whether to escape or unescape the given string. "escape" means to convert special characters in the string to their corresponding entity references in XML. "unescape" means to convert these entity references back to their original characters.

• "${string}": This is the placeholder representing the actual string you want to process. You need to replace "${string}" with the desired text.

To use the command, you would replace "${string}" with the string you want to escape or unescape, and then execute the command. The command will transform the provided string accordingly, either escaping special characters or unescaping entity references depending on the option specified.