How do you record audio from command line with osx?

I've tried ffmpeg but there is no /dev/dsp device.

Solution 1:

Try SoX or Ecasound.

Solution 2:

I'd recommend looking into MPlayer OSX Extended -- it's a port of the linux app "mplayer" and will let you record from a multitude of audio sources (including streams and remote files).

/Applications/MPlayer\ OSX\ Extended.app/Contents/Resources/Binaries/mpextended.mpBinaries/Contents/mpextended.mpBinaries/Contents/MacOS/mplayer \
    http://server.com/stream.pl \
    -cache 1024 -ao coreaudio:device_id=49 -volume 65 -ac hwac3, -slave \
    -identify -noar -dumpstream -dumpfile ~/Desktop/stream.mp3

See http://www.mplayerosx.ch/ for more information