Manipulate text files of various formats. More information: https://keith.github.io/xcode-man-pages/textutil.1.html.
foo.rtf
:textutil -info path/to/foo.rtf
foo.rtf
into foo.html
:textutil -convert html path/to/foo.rtf
textutil path/to/foo.rtf -convert txt
foo.txt
into foo.rtf
, using Times 10 for the font:textutil -convert rtf -font Times -fontsize 10 path/to/foo.txt
index.html
with the HTML title set to “Several Files”:textutil -cat html -title "Several Files" -output path/to/index.html *.rtf