cat in.md | marked > out.html

echo "hello *world*" | marked

marked -o out.html -i in.md --gfm

marked --output="hello world.html" -i in.md --no-breaks

• -o, --output [output file]
  Specify file output. If none is specified, write to stdout.
• -i, --input [input file]
  Specify file input, otherwise use last argument as input file.
  If no input file is specified, read from stdin.
• -s, --string [markdown string]
  Specify string input instead of a file.
• -c, --config [config file]
  Specify config file to use instead of the default ~/.marked.json or ~/.marked.js or ~/.marked/index.js.
• -t, --tokens
  Output a token list instead of html.
• -n, --no-clobber
  Do not overwrite output if it exists.
• --pedantic
  Conform to obscure parts of markdown.pl as much as possible.
  Don't fix original markdown bugs.
• --gfm
  Enable github flavored markdown.
• --breaks
  Enable GFM line breaks. Only works with the gfm option.
• --no-breaks, -no-etc...
  The inverse of any of the marked options above.
• --silent
  Silence error output.
• -h, --help
  Display help information.

import { Marked } from 'marked';
const marked = new Marked({ gfm: true });
marked.parse('*foo*');