Command-Line Option Differences Between adb and MDB

MDB provides a superset of the command-line options recognized by adb. All the adb options are supported and have the same meaning as before. The /usr/bin/adb pathname is delivered as a link that invokes mdb(1), and automatically enables enhanced adb compatibility mode. Executing the /usr/bin/adb link is equivalent to executing mdb with the -o adb option, or executing ::set -o adb once the debugger has started.