How can I do a batch conversion of HTML entities to Hanzi?

I have a huge .txt file which contains lots of HTML entities representing Unicode characters, like this:

哀牢山

In Pinyin, this would read "Ai Lao Shan" or "Ai1 Lao2 Shan1", to be more precise. I need a tool or command line or Pages/Numbers macro, whatever, which replaces all strings like &#....; in said file into proper Hanzi, which in this case would be:

哀牢山

Any suggestions for a tool or script or program that runs on macOS?

Solution 1:

You can install recode via the Terminal with Homebrew:

brew install recode

and then use it to convert HTML to Unicode, like this:

echo '哀牢山' | recode html..utf8

This produces

哀牢山

_{(inspired by @creving's answer on Stack Overflow)}