In addition, version 0.99 of the command-line utilities has been released. The 0.99 version number signifies that the interface for them should now be the one that will go into 1.0, and which will be stable from 1.0 onwards, but there might still be some tweaks before that. Hopefully nothing will change, though.

Mac OS X version: http://theunarchiver.googlecode.com/files/unar0.99.zip
Windows version: http://theunarchiver.googlecode.com/files/unar0.99_win.zip
Source code: http://theunarchiver.googlecode.com/files/unar0.99_src.zip

• All the file-format-related improvements from post >>34 also apply to this version of unar and lsar.
• The command-line interface has changed drastically. Things have been renamed, moved around and lots of stuff has been added.
• The JSON code output by lsar in JSON mode has also changed.
• unar now has interactive prompts to deal with file collisions and similar things. There are also options to override the prompts.
• unar can now enclose extracted files in subdirectories, much like The Unarchiver. There are various command-line options to control the behavior.
• lsar now has a long format (-l) which displays more information about files.
• The programs now exit with error codes on errors.
• The Windows version no longer needs the OpenSSL dll file, and now only relies on Foundation1.0.dll.
• There is now a separate source code archive for unar and lsar. It contains mostly the same as the The Unarchiver source archive, except for the GUI-specific parts.