textutil

Manipulate text files of various formats. More information: https://keith.github.io/xcode-man-pages/textutil.1.html.

• Display information about foo.rtf:

textutil -info path/to/foo.rtf

• Convert foo.rtf into foo.html:

textutil -convert html path/to/foo.rtf

• Convert rich text to normal text:

textutil path/to/foo.rtf -convert txt

• Convert foo.txt into foo.rtf, using Times 10 for the font:

textutil -convert rtf -font Times -fontsize 10 path/to/foo.txt

• Load all RTF files in the current directory, concatenates their contents, and writes the result out as index.html with the HTML title set to "Several Files":

textutil -cat html -title "Several Files" -output path/to/index.html *.rtf