hunspell:tldr:f5303

The command "hunspell -d ${en_US} ${filename}" is used to run the Hunspell spell checker program with a specific dictionary and on a specific file.

Here's the breakdown of the command:

• "hunspell" is the command to run the Hunspell program.
• "-d ${en_US}" is an option provided to specify the dictionary to be used. In this case, "${en_US}" represents the dictionary file for the American English language.
• "${filename}" is a placeholder for the name of the file that you want to check for spelling errors. You would replace "${filename}" with the actual name of the file.

So when you run this command, Hunspell will be launched with the specified dictionary (en_US) and will perform a spell check on the given file.