I would like to thank my two years younger self for writing such clear instructions on how to install PNGOut on a Mac. My command-line skills, such as they were, have become extremely rusty, but when I needed to install PNGout again, I went from downloading the program to getting the first output written to disk in five minutes. The post also contained my command for batch operations, which I shall quote here again for future reference:
for s in *.png;do pngout "$s" pngout/$s;done
This will work if you have a subfolder named “pngout” already, and will keep your input files separated from your output.
On a completely related note, I have finally got the redrawn ROCR page for February 02, 2003 uploaded to the website.