f filename      Switch to viewing filename. File must be already loaded.
                filename may be either the full name of the file, or a regular
                expression matching the full file name:
                f /home/me/foo.pl and f oo\. may access the same file.
                Evals (with saved bodies) are considered to be filenames:
                f (eval 7) and f eval 7\b access the body of the 7th eval
                (in the order of execution).
/pattern/       Search forwards for pattern; final / is optional.
?pattern?       Search backwards for pattern; final ? is optional.
L               List all breakpoints and actions.
S [[!]pattern]  List subroutine names [not] matching pattern.
t               Toggle trace mode.
t expr          Trace through execution of expr.
b [line] [condition]
                Set breakpoint; line defaults to the current execution line;
                condition breaks if it evaluates to true, defaults to '1'.
b subname [condition]
                Set breakpoint at first line of subroutine.
b $var          Set breakpoint at first line of subroutine referenced by $var.
b load filename Set breakpoint on `require'ing the given file.
b postpone subname [condition]
                Set breakpoint at first line of subroutine after
                it is compiled.
b compile subname
                Stop after the subroutine is compiled.
d [line]        Delete the breakpoint for line.
D               Delete all breakpoints.
a [line] command
                Set an action to be done before the line is executed;
                line defaults to the current execution line.
                Sequence is: check for breakpoint/watchpoint, print line
                if necessary, do action, prompt user if necessary,
                execute line.
a [line]        Delete the action for line.
A               Delete all actions.
W expr          Add a global watch-expression.
W               Delete all watch-expressions.
V [pkg [vars]]  List some (default all) variables in package (default current).
                Use ~pattern and !pattern for positive and negative regexps.
X [vars]        Same as "V currentpackage [vars]".
x expr          Evals expression in list context, dumps the result.
m expr          Evals expression in list context, prints methods callable
                on the first element of the result.
m class         Prints methods callable via the given class.

< ?             List Perl commands to run before each prompt.
< expr          Define Perl command to run before each prompt.
<< expr         Add to the list of Perl commands to run before each prompt.
> ?             List Perl commands to run after each prompt.
> expr          Define Perl command to run after each prompt.
>> expr         Add to the list of Perl commands to run after each prompt.
{ db_command    Define debugger command to run before each prompt.
{ ?             List debugger commands to run before each prompt.
< expr          Define Perl command to run before each prompt.
{{ db_command   Add to the list of debugger commands to run before each prompt.
! number        Redo a previous command (default previous command).
! -number       Redo number'th-to-last command.
! pattern       Redo last command that started with pattern.
                See 'O recallCommand' too.
!! cmd          Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)
                See 'O shellBang' too.
H -number       Display last number commands (default all).
p expr          Same as "print {DB::OUT} expr" in current package.
|dbcmd          Run debugger command, piping DB::OUT to current pager.
||dbcmd         Same as |dbcmd but DB::OUT is temporarilly select()ed as well.
= [alias value] Define a command alias, or list current aliases.
command         Execute as a perl statement in current package.
v               Show versions of loaded modules.
R               Pure-man-restart of debugger, some of debugger state
                and command-line options may be lost.
                Currently the following setting are preserved:
                history, breakpoints and actions, debugger Options
                and the following command-line options: -w, -I, -e.

O [opt] ...     Set boolean option to true
O [opt?]        Query options
O [opt=val] [opt="val"] ...
                Set options.  Use quotes in spaces in value.
    recallCommand, ShellBang chars used to recall command or spawn shell;
    pager               program for output of "|cmd";
    tkRunning           run Tk while prompting (with ReadLine);
    signalLevel warnLevel dieLevel level of verbosity;
    inhibit_exit        Allows stepping off the end of the script.
    ImmediateStop       Debugger should stop as early as possible.
    RemotePort          Remote hostname:port for remote debugging
  The following options affect what happens with V, X, and x commands:
    arrayDepth, hashDepth  print only first N elements ('' for all);
    compactDump, veryCompact  change style of array and hash dump;
    globPrint           whether to print contents of globs;
    DumpDBFiles         dump arrays holding debugged files;
    DumpPackages        dump symbol tables of packages;
    DumpReused          dump contents of "reused" addresses;
    quote, HighBit, undefPrint  change style of string dump;
    bareStringify       Do not print the overload-stringified value;
  Other options include:
    PrintRet            affects printing of return value after r command,
    frame               affects printing messages on entry and exit from subroutines.
    AutoTrace           affects printing messages on every possible breaking point.
    maxTraceLen         gives maximal length of evals/args listed in stack trace.
    ornaments           affects screen appearance of the command line.
        During startup options are initialized from $ENV{PERLDB_OPTS}.
        You can put additional initialization options TTY, noTTY,
        ReadLine, NonStop, and RemotePort there (or use
        `R' after you set them).

q or ^D         Quit. Set $DB::finished = 0 to debug global destruction.
h [db_command]  Get help [on a specific debugger command], enter |h to page.
h h             Summary of debugger commands.
perldoc manpage Runs the external doc viewer perldoc command on the
                named Perl manpage, or on perldoc itself if omitted.
                Set $DB::doccmd to change viewer.

Type `|h' for a paged display if this was too hard to read.

  DB<1>