ABCDE
ABCDE (A Better CD Encoder) is a CD ripper for Linux and UNIX-like operating systems, operated entirely from the command line. The program can be run 'as is' or can run with command line switches or from a config file. It will query either FreeDB or MusicBrainz for the CD currently in the drive, display a list of possible matches to choose from, then optionally rip, encode, tag the files and even optionally normalize, add replaygain information or create a playlist. As of version 2.6 ABCDE can rip to Vorbis, FLAC, MP3, Wav, and others.
abcde 2.7 has been released on June 18th 2015 with an impressive list of changes including automated and semi-automated album art downloading.
References
External links
git.einval.com - latest upstream code
abcde users mailing list - abcde help and discussions
abcde: Command Line Music CD Ripping for Linux - a user guide.
Downloading album art with abcde - How to download album art with abcde.