Download a file with machine-readable progress output

I need a (linux) program that can download from a HTTP (or optionally FTP) source, and output its progress to the terminal, in a machine-readable form.

What I mean by this is I would like it to NOT use a progress bar, but output progress as a percentage (or other number), one line at a time.

As far as I know, both开发者_如何学Go wget and curl don't support this.

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Use wget. The percentage is already there.

PS. Also, this isn't strictly programming related..

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Try to use curl with PipeViewer (http://www.ivarch.com/programs/quickref/pv.shtml).

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Presumably you want another script or application to read the progress and do something with it, yes? If this is the case, then I'd suggest using libcurl in that application/script to do the downloading. You'll be able to easily process the progress and do whatever you want with it. This is far easier than trying to parse output from wget or curl.

The progress bar from curl and wget can be parsed, just ignore the bar itself and extract the % done, time left, data downloaded, and whatever metrics you want. The bar is overwritten using special control characters. When parsed by another application, you will see many \r's and \b's.