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loader.4th (8)
  • >> loader.4th (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    loader.4th
    
     - loader.conf processing tools
    
     
    

    DESCRIPTION

    The file that goes by the name of is a set of commands designed to manipulate loader.conf5 files. The default /boot/loader.rc includes and uses one of its commands to automatically read and process the standard loader.conf5 files. Other commands exists to help the user specify alternate configurations.

    The commands of 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 , it must be included through the command:

    include loader.4th

    This line is present in the default /boot/loader.rc file, so it is not needed (and should not be re-issued) in a normal setup.

    The commands provided by it are:

    boot
    boot kernelname [... ]
    boot directory [... ]
    boot -flag ...
    Boot as specified by the loader.conf5 files read.

    Depending on the arguments passed, it can override boot flags and either the kernel name or the search path for kernel and modules.

    boot-conf
    boot-conf kernelname [... ]
    boot-conf directory [... ]
    boot-conf -flag ...
    Works like boot described above, but instead of booting immediately, uses autoboot so it can be stopped.

    start
    Reads /boot/defaults/loader.conf all other loader.conf5 files specified in it, and then proceeds to boot as specified in them. This is the command used in the default /boot/loader.rc file, and it uses the autoboot command (see loader(8)), so it can be stopped for further interaction with loader(8).

    initialize
    Initialize the supporting library so commands can be used without executing start first. Like start reads /boot/defaults/loader.conf and all other loader.conf5 files specified in it. Returns a flag on the stack to indicate if any configuration file was successfully loaded.

    read-conf filename
    Reads and processes a loader.conf5 file. Does not proceed to boot.

    enable-module module
    Enables the loading of module

    disable-module module
    Disables the loading of module

    toggle-module module
    Toggles the loading of module on and off.

    show-module module
    Shows the information gathered in the loader.conf5 files about the module module

    retry
    Used inside loader.conf5 files to specify the action after a module loading fails.

    ignore
    Used inside loader.conf5 files to specify the action after a module loading fails.

     

    FILES

    /boot/loader
    The loader(8).
    /boot/loader.4th
    itself.
    /boot/loader.rc
    loader(8) bootstrapping script.
    /boot/defaults/loader.conf
    File loaded by the start command.

     

    EXAMPLES

    Standard /boot/loader.rc

    include /boot/loader.4th
    start
    

    Load a different kernel with the standard configuration:

    set kernel="kernel.old"
    unload
    boot-conf
    

    Read an additional configuration file and then proceed to boot:

    unload
    read-conf /boot/special.conf
    boot-conf
    

    Disable the loading of the splash screen module and bitmap and then proceed to boot:

    unload
    disable-module splash_bmp
    disable-module bitmap
    boot-conf
    
     

    SEE ALSO

    loader.conf5, loader(8)  

    HISTORY

    The set of commands first appeared in Fx 3.2 .  

    AUTHORS

    The set of commands was written by An Daniel C. Sobral Aq dcs@FreeBSD.org .  

    BUGS

    A British espionage series.


     

    Index

    NAME
    DESCRIPTION
    FILES
    EXAMPLES
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


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