DELAY.4TH(7) Standards, Environments, and Macros DELAY.4TH(7)

NAME

delay.4th - loader debugging boot module

DESCRIPTION

The file that goes by the name of delay.4th is a set of commands
designed to add debugging capabilities to loader(7). The commands of
delay.4th by themselves are not enough for most uses. Please refer to
the examples below for the most common situations, and to loader(7) for
additional commands.

Before using any of the commands provided in delay.4th, it must be
included through the command:

include delay.4th

This line is present in /boot/forth/beastie.4th file, so it is not
needed (and should not be re-issued) in a normal setup.

The commands provided by it are:

delay_execute Executes the [string] procedure stored in
the delay_command environment variable
after loader_delay seconds.

If the optional delay_showdots environment
variable is set, a continuous series of
dots is printed.

During the duration, the user can either
press Ctrl-C (or Esc) to abort or ENTER to
proceed immediately.

The environment variables that effect its behavior are:

delay_command
The command to be executed by delay_execute.

loader_delay
The duration (in seconds) to delay before executing
delay_command.

delay_showdots
If set, will cause delay_execute to print a continuous
series of dots during the delay duration.

FILES

/boot/loader The loader(7).
/boot/forth/delay.4th delay.4th itself.
/boot/loader.rc loader(7) bootstrapping script.

EXAMPLES

Introducing a 5-second delay before including another file from
/boot/loader.rc:

include /boot/forth/delay.4th
set delay_command="include /boot/forth/other.4th"
set delay_showdots
set loader_delay=5
delay_execute

SEE ALSO

loader.conf(5), beastie.4th(7), loader(7), loader.4th(7)

illumos July 20, 2018 illumos