Using the command line interface of debug
debug is a symbolic, source-level debugger with many capabilities,
including an easy-to-understand command language,
control over multiple processes,
and evaluation of complex expressions.
It facilitates the finding of errors in user
programs by allowing the user to control the execution of a program
and examine its state.
Live programs can be executed one source statement or machine
instruction at a time, or can be instructed to run until
some event occurs.
Program variables and the processor registers may be examined
or modified,
and the user can request a trace back of active functions,
disassembly of a portion of the program's executable code
or a raw dump of any area of the program's memory.
debug supports single and multiprocess applications and processes that consist
of a single thread of control or of multiple threads.
Most of the debugger commands accept a list of processes and
threads to which the specified actions will be applied.
The user can set a breakpoint in a single thread and request that a
list of threads and processes stop when that breakpoint is encountered.
Users can also request interception of signals and system calls
on a per-thread basis and can request per-thread stack traces and
register dumps.
This tutorial introduction is intended to
help you become proficient using debug with the Command Line Interface (CLI).
The tutorial covers all the major features.
NOTE:
A separate tutorial covers the graphical user interface.
For a more complete description of the individual commands,
see
debug(CP)
or the on-line help facility.
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SCO OpenServer Release 6.0.0 -- 02 June 2005