OpenBSD command: pmdb

PMDB(1)                    OpenBSD Reference Manual                    PMDB(1)
NAME
     pmdb - debugger
SYNOPSIS
     pmdb [-c core] [-p pid] program ...
DESCRIPTION
     The pmdb utility can be used to see what is happening inside a running
     process or to catch program crashes and examine the state at the time of
     the crash.  The only way to start pmdb at this moment is to specify the
     name of the program to be debugged and all its arguments on the command
     line.  Optionally, -c can be used to specify a core file to examine.  It
     is also possible to debug a process that is already running by specifying
     the process's PID to the -p flag.  This causes the process to be put in
     STOPPED state until execution is resumed either by an explicit command to
     pmdb or by exiting pmdb.  The program is controlled from a command line
     which usually gives the prompt "pmdb>".
PROCESS STATES
     A loaded program can be in one of three possible states:
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