HOWTO: recursively download only specific file types

Have you ever found a batch of mp3s online on someone’s ‘Index of’ page?  I know you have (and if not, do a search for ‘google hacks’ in google to learn about the fun)  The issue always comes up that I find an album I want to grab, but the individual files are in a directory, so you have something like band_name-album_name/01-songone.mp3, and so on.  To grab all of them I used to issue a wget command, with the -r (recursive) switch like this:

wget -r*

but then I’d end up with a ton of other files from the root directory that would take time and confuse the download so I’d have to search around for the mp3 payload.  I found a better way to do it, still using the -r for recursive search, but then only downloading the mp3s, forgoing any html pages or other directories in the root.  The command goes something like this:

wget -A mp3,mpg,mpeg,avi -r -l 3*

The curl command operates in a similar way. Its advantage is that it’s actively developed. Other similar commands that you can use are snarf, fget, and fetch, but I don’t see a direct advantage over wget with the proper filters.

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