dbx is a popular, UNIX-based source-level debugger found primarily on Solaris, AIX , and BSD UNIX systems. It provides symbolic debugging for programs written in C, C++, Pascal, and Fortran.

dbx is also available on IBM z/OS systems, in the UNIX System Services component. dbx for z/OS can debug programs written in C and C++. It can also perform machine level debugging. As of z/OS V1R5, dbx is able to debug programs using the DWARF debug format. z/OS V1R6 added support for debugging 64-bit programs.

Useful features include stepping through programs one source line or machine instruction at a time. In addition to simply viewing operation of the program, variables can be manipulated and a wide range of expressions can be evaluated and displayed.

See also

• GDB
• dbx for z/OS