The advanced debugger adb is a debugger that first appeared in Seventh Edition UNIX. It is found on Solaris, HP-UX, SCO and Venix. It is the successor of a debugger called db.

Overview

The initial version was written by Stephen R. Bourne. ADB was provided with Solaris until Solaris 8 (2000), when it was replaced by the Modular Debugger (mdb) with Solaris 8 (2000) and the ADB command-line interface now is emulated by mdb when it is called as adb. Mdb has become OpenSource with OpenSolaris. The Solaris kernel debugger kadb that was introduced with SunOS-3.5 (1986) is a minor variant of adb.