I have a directory on my machine with 100s of images in it. About half of those images are bmp files, and the other half are png files. I need to convert all the bmps into pngs, but as there are so many of them I don't want to do it manually.
So how can I recursively and automatically (probably using a script) convert all the bmp image files into png image files in that directory?
I am running Ubuntu GNOME 15.10 with GNOME 3.18.