I am trying to use the script r symbol in my latex document shown below.
I found a solution here: Script-r Symbol which should do exactly what I'm trying to do, down to the book I found the symbol in. I would like to use accepted solution to that question, but when I run the vptovf command in terminal, it just reads out
This is VPtoVF, Version 1.6 (MiKTeX 21.6)
Usage: vptovf VPLFILE VFFILE TFMFILE
and does nothing. I cannot find another instance of this online or elsewhere.
I am running Ubuntu 20.04 LTS and MiKTeX 21.6.
Can someone help me get the vptovf command to work?

vftovf file.vpl file.vf file.tfm? – Ulrike Fischer Sep 11 '21 at 22:20vptovf griffm.vpl griffm.vf griffm.tfmand it worked fine. But I'm on windows, if it doesn't work for you make a bug report. – Ulrike Fischer Sep 11 '21 at 22:31