User`s guide

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Appendix A: dbx Commands
record output [file]
Records all dbx output infile. The default file is a temporary
dbx file in the /tmp directory. The name of the temporary file
is stored in the dbx variable $defaultout. If the dbx variable
$rimode is nonzero, dbx also records the commands you
enter.
rerun run-arguments
Without any arguments, repeats the last run command, if
applicable. Otherwise, rerun is equivalent to the run
command without any arguments.
resume Resumes execution of the program, and returns
immediately to the dbx command interpreter.
resume [signal] Resumes execution of the process, sending it the specified
signal, and returns immediately to the dbx command
interpreter.
return Continues execution until control returns to the next
procedure on the stack.
return proc Continues execution until control returns to the named
procedure.
run run-arguments
Starts your program and passes to it any arguments that
you provide. All shell processing is accepted, such as
unglobbing of * and ? in filenames. Redirection of the
program’s standard input and standard output, and/or
standard error is also done by the shell. In other words, the
run command does exactly what typing target run-arguments
does. You can specify a target, either on dbx invocation or in
a prior givenfile command. dbx passes ./target as argv[0] to
target when you specify it as a relative pathname. You can
specify target either on dbx invocation or in a prior givenfile
command. dbx passes ./target as argv[0] to target when you
specify it as a relative pathname.
A run command must appear on a line by itself and cannot
be followed by another dbx command. Terminate the
command line with a return (new-line). Note that you
cannot include a run command in the command list of a
when command.