rgb2ycbcr and rgrep
I was trying to tab complete
rgrep, but got this command instead. From its man(1) page:
rgb2ycbcr converts RGB color, greyscale, or bi-level TIFF images to YCbCr images by transforming and sampling pixel data. If multiple files are specified on the command line each source file is converted to a separate directory in the destination file.
This would have really helped me a few years ago, because the Gimp didn’t do CMYK. I’m not sure if it does now.
rgrep, I’ve aliased it to
grep -R. I haven’t checked if
ack has compatible options to alias to that.