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DELAY.4TH(8)            FreeBSD System Manager's Manual           DELAY.4TH(8)

NAME
     delay.4th - FreeBSD 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(8).  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(8) 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/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(8).
     /boot/delay.4th   delay.4th itself.
     /boot/loader.rc   loader(8) bootstrapping script.

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

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

SEE ALSO
     loader.conf(5), beastie.4th(8), loader(8), loader.4th(8)

HISTORY
     The delay.4th set of commands first appeared in FreeBSD 9.0.

AUTHORS
     The delay.4th set of commands was written by Devin Teske
     <[email protected]>.

FreeBSD 11.1-RELEASE-p4          May 18, 2011          FreeBSD 11.1-RELEASE-p4
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