extract - display meta-data of files
Occasionally I'm dealing with files that are opaque to me. file helps a lot
with getting a rough idea of what I'm looking at. Today I discovered extract
though. It's a command line tool like file but it doesn't only guess the file
type. It also tries to parse metadata from the file and displays it. For now I
tested it with audio and image files and it happily displayed ID3 and EXIF
infos. This is quite handy.