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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