8719fada36
cleaning. The 'help' command in the loader should now be usable and hopefully informative.
263 lines
8.3 KiB
Plaintext
263 lines
8.3 KiB
Plaintext
################################################################################
|
|
# Thelp DDisplay command help
|
|
|
|
help [topic [subtopic]]
|
|
?
|
|
|
|
The help command displays help on commands and their usage.
|
|
|
|
In command help, a term enclosed with <...> indicates a value as
|
|
described by the term. A term enclosed with [...] is optional,
|
|
and may not be required by all forms of the command.
|
|
|
|
Some commands may not be availalble. Use the '?' command to list
|
|
most available commands.
|
|
|
|
################################################################################
|
|
# Tautoboot DBoot after a delay
|
|
|
|
autoboot [<delay> [<prompt>]]
|
|
|
|
Displays <prompt> or a default prompt, and counts down <delay> seconds
|
|
before attempting to boot. If <delay> is not specified, the default
|
|
value is 10.
|
|
|
|
################################################################################
|
|
# Tboot DBoot immediately
|
|
|
|
boot [-<arg> ...] [<kernelname>]
|
|
|
|
Boot the system. If arguments are specified, they are added to the
|
|
arguments for the kernel. If <kernelname> is specified, and a kernel
|
|
has not already been loaded, it will be booted instead of the default
|
|
kernel.
|
|
|
|
################################################################################
|
|
# Techo DEcho arguments
|
|
|
|
echo [-n] [<message>]
|
|
|
|
Emits <message>, with no trailing newline if -n is specified. This is
|
|
most useful in conjunction with scripts and the '@' line prefix.
|
|
|
|
Variables are substituted by prefixing them with $, eg.
|
|
|
|
echo Current device is $currdev
|
|
|
|
will print the current device.
|
|
|
|
################################################################################
|
|
# Tload DLoad a kernel or module
|
|
|
|
load [-t <type>] <filename>
|
|
|
|
Loads the module contained in <filename> into memory. If no other
|
|
modules are loaded, <filename> must be a kernel or the command will
|
|
fail.
|
|
|
|
If -t is specified, the module is loaded as raw data of <type>, for
|
|
later use by the kernel or other modules. <type> may be any string.
|
|
|
|
################################################################################
|
|
# Tls DList files
|
|
|
|
ls [-l] [<path>]
|
|
|
|
Displays a listing of files in the directory <path>, or the root
|
|
directory of the current device if <path> is not specified.
|
|
|
|
The -l argument displays file sizes as well; the process of obtaining
|
|
file sizes on some media may be very slow.
|
|
|
|
################################################################################
|
|
# Tlsdev DList devices
|
|
|
|
lsdev [-v]
|
|
|
|
List all of the devices from which it may be possible to load modules.
|
|
If -v is specified, print more details.
|
|
|
|
################################################################################
|
|
# Tlsmod DList modules
|
|
|
|
lsmod [-v]
|
|
|
|
List loaded modules. If [-v] is specified, print more details.
|
|
|
|
################################################################################
|
|
# Tpnpscan DScan for PnP devices
|
|
|
|
pnpscan [-v]
|
|
|
|
Scan for Plug-and-Play devices. This command is normally automatically
|
|
run as part of the boot process, in order to dynamically load modules
|
|
required for system operation.
|
|
|
|
If the -v argument is specified, details on the devices found will
|
|
be printed.
|
|
|
|
################################################################################
|
|
# Tset DSet a variable
|
|
|
|
set <variable name>
|
|
set <variable name>=<value>
|
|
|
|
The set command is used to set variables.
|
|
|
|
################################################################################
|
|
# Tset Sautoboot_delay DSet the default autoboot delay
|
|
|
|
set autoboot_delay=<value>
|
|
|
|
Sets the default delay for the autoboot command to <value> seconds.
|
|
|
|
################################################################################
|
|
# Tset Sbootfile DSet the default boot file set
|
|
|
|
set bootfile=<filename>[,<filename>...]
|
|
|
|
The default search path for bootable kernels is /kernel,/kernel.old.
|
|
It may be overridden by setting the bootfile variable to a
|
|
semicolon-separated list of paths, which will be searched for in turn.
|
|
|
|
################################################################################
|
|
# Tset Sboot_askname DPrompt for root device
|
|
|
|
set boot_askname
|
|
|
|
Instructs the kernel to prompt the user for the name of the root device
|
|
when the kernel is booted.
|
|
|
|
################################################################################
|
|
# Tset Sboot_ddb DDrop to the kernel debugger (DDB)
|
|
|
|
set boot_ddb
|
|
|
|
Instructs the kernel to start in the DDB debugger, rather than
|
|
proceeding to initialise when booted.
|
|
|
|
################################################################################
|
|
# Tset Sboot_gdb DSelect gdb-remote mode
|
|
|
|
set boot_gdb
|
|
|
|
Selects gdb-remote mode for the kernel debugger by default.
|
|
|
|
################################################################################
|
|
# Tset Sboot_single DStart system in single-user mode
|
|
|
|
set boot_single
|
|
|
|
Prevents the kernel from initiating a multi-user startup, single-user
|
|
mode will be entered when the kernel has finished device probes.
|
|
|
|
################################################################################
|
|
# Tset Sboot_verbose DVerbose boot messages
|
|
|
|
set boot_verbose
|
|
|
|
Setting this variable causes extra debugging information to be printed
|
|
by the kernel during the boot phase.
|
|
|
|
################################################################################
|
|
# Tset Sconsole DSet the current console
|
|
|
|
set console[=<value>]
|
|
|
|
Sets the current console. If <value> is omitted, a list of valid
|
|
consoles will be displayed.
|
|
|
|
################################################################################
|
|
# Tset Scurrdev DSet the current device
|
|
|
|
set currdev=<device>
|
|
|
|
Selects the default device. Syntax for devices is odd.
|
|
|
|
################################################################################
|
|
# Tset Smodule_path DSet the module search path
|
|
|
|
set module_path=<path>[,<path>...]
|
|
|
|
Sets the list of directories which will be searched in for modules
|
|
named in a load command or implicitly required by a dependancy.
|
|
|
|
################################################################################
|
|
# Tset Sprompt DSet the command prompt
|
|
|
|
set prompt=<value>
|
|
|
|
The command prompt is displayed when the loader is waiting for input.
|
|
Variable substitution is performed on the prompt. The default
|
|
prompt can be set with:
|
|
|
|
set prompt=\$currdev>
|
|
|
|
################################################################################
|
|
# Tset Srootdev DSet the root filesystem
|
|
|
|
set rootdev=<path>
|
|
|
|
By default the value of $currdev is used to set the root filesystem
|
|
when the kernel is booted. This can be overridden by setting
|
|
$rootdev explicitly.
|
|
|
|
################################################################################
|
|
# Tshow DShow the values of variables
|
|
|
|
show [<variable>]
|
|
|
|
Displays the value of <variable>, or all variables if not specified.
|
|
Multiple paths can be separated with a semicolon.
|
|
|
|
See the set command for a list of some variables.
|
|
|
|
################################################################################
|
|
# Tsource DRead commands from a script file
|
|
|
|
source <filename>
|
|
|
|
The entire contents of <filename> are read into memory before executing
|
|
commands, so it is safe to source a file from removable media.
|
|
|
|
A number of modifiers may be prefixed to commands within a script file
|
|
to alter their behaviour:
|
|
|
|
@ Suppresses the printing of the command when executed.
|
|
|
|
- Prevents the script from terminating if the command returns
|
|
an error.
|
|
|
|
################################################################################
|
|
# Tread DRead input from the terminal
|
|
|
|
read [-t <value>] [-p <prompt>] [<variable name>]
|
|
|
|
The read command reads a line of input from the terminal. If the
|
|
-t argument is specified, it will return nothing if no input has been
|
|
received after <value> seconds. (Any keypress will cancel the
|
|
timeout).
|
|
|
|
If -p is specified, <prompt> is printed before reading input. No
|
|
newline is emitted after the prompt.
|
|
|
|
If a variable name is supplied, the variable is set to the value read,
|
|
less any terminating newline.
|
|
|
|
################################################################################
|
|
# Tunload DRemove all modules from memory
|
|
|
|
unload
|
|
|
|
This command removes any kernel and all loaded modules from memory.
|
|
|
|
################################################################################
|
|
# Tunset DUnset a variable
|
|
|
|
unset <variable name>
|
|
|
|
If allowed, the named variable's value is discarded and the variable
|
|
is removed.
|
|
|
|
################################################################################
|