nkf:tldr:497eb

The command "nkf -c --overwrite ${filename-txt}" is used to convert the character encoding of a text file to the Unicode UTF-8 format while overwriting the original file.

Here is a breakdown of the command:

• "nkf" stands for "Network Kanji Filter," which is a command-line tool used for character encoding conversions.
• "-c" is an option that tells nkf to convert the input to Unicode (UTF-8) character encoding.
• "--overwrite" is an option that instructs nkf to overwrite the original file with the converted version. Without this option, nkf will create a new file with the converted content, leaving the original file unchanged.
• "${filename-txt}" is a placeholder for the actual filename and extension of the text file you want to convert. You need to replace "${filename-txt}" with the actual name and extension of your file (e.g., "example.txt").

In summary, this command will convert the character encoding of the specified text file to UTF-8 format while replacing the original file with the converted version.