Mike You can build tofrodos from source like so:
mkdir -p ~/tmp ~/bin
cd ~/tmp
wget https://tofrodos.sourceforge.io/download/tofrodos-1.7.13.tar.gz
tar zxf tofrodos-1.7.13.tar.gz
cd tofrodos-1.7.13
make
mv {todos,fromdos} ~/bin
Note that all Opalstack servers already have dos2unix
and unix2dos
installed, so it's possible that you don't even need tofrodos.
Hope this helps 🙂