Batch conversion of .CR3 (Canon compressed raw files) images into .PNG files on Linux

gistfile1.txt

Install RawTherapee, available from https://rawtherapee.com/downloads/5.10/. 
My package manager had the old 5.8 one that couldn't handle .CR3 files, so I grabbed the 5.10 AppImage 
and extracted the CLI tool with --appimage-extract.

Basic command line usage example: rawtherapee-cli -o ../canon-png/IMG_4555.CR3 -s -t -Y -c canon-raw/IMG_4555.CR3

Batch bash script: for f in canon-raw/*.CR3 ; do newf=./canon-png/`basename $f`; raw-therapee-cli -o $newf -s -t -Y -c $f; done

More examples at RawTherapee's CLI usage page: https://rawpedia.rawtherapee.com/Command-Line_Options

I found a page at https://www.isoftstoneinc.com/insights/libraw-rawtherapee-imagemagick/ that described how to
integrate RawTherapee into imagemagick, but I couldn't make it work. :( I gave up and will use the RawTherapee
CLI binary directly for raw files conversions.