Display the contents of the file with underlines made of dashes -

ul

  • Performs the underlining of a text.
    Each character in a given string must be underlined separately.
    More information: <https://manned.org/ul>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

ul -i {{file.txt}}

click the source code to copy install ul on any operating system with command-not-found.com