xml-unescape:tldr:58897
xml-unescape: Unescape special XML characters from a string.
$ xml unescape "${<a1>}"
try on your machine
The command xml unescape "${<a1>}" is used to unescape XML special entities in a string. In this particular example, the string being unescaped is ${<a1>}.
In XML, special characters like <, >, &, ", and ' have reserved meanings and cannot be used directly in a text. Instead, they need to be represented using special entities. In this case, the XML entity < represents the < character.
So, the command xml unescape "${<a1>}" would unescape the XML special entity in the string ${<a1>}, replacing < with <. The resulting unescaped string would be ${<a1>}.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.