* docs/grub.texi (Menu-specific commands): Remove some semantics
that were true in GRUB Legacy but not in GRUB 2. (submenu): New section. (false): New section. (read): New section. (true): New section.
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Colin Watson
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2 changed files with 57 additions and 11 deletions
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@ -1,3 +1,12 @@
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2011-03-30 Colin Watson <cjwatson@ubuntu.com>
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* docs/grub.texi (Menu-specific commands): Remove some semantics
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that were true in GRUB Legacy but not in GRUB 2.
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(submenu): New section.
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(false): New section.
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(read): New section.
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(true): New section.
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2011-03-30 Colin Watson <cjwatson@ubuntu.com>
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* docs/grub.texi (Changes from GRUB Legacy): Minor proofreading.
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@ -2411,9 +2411,6 @@ In rescue mode, only the @command{insmod} (@pxref{insmod}), @command{ls}
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The semantics used in parsing the configuration file are the following:
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@itemize @bullet
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@item
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The menu-specific commands have to be used before any others.
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@item
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The files @emph{must} be in plain-text format.
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@ -2427,20 +2424,13 @@ Options are separated by spaces.
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@item
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All numbers can be either decimal or hexadecimal. A hexadecimal number
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must be preceded by @samp{0x}, and is case-insensitive.
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@item
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Extra options or text at the end of the line are ignored unless otherwise
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specified.
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@item
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Unrecognized commands are added to the current entry, except before entries
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start, where they are ignored.
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@end itemize
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These commands can only be used in the menu:
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@menu
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* menuentry:: Start a menu entry
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* submenu:: Group menu entries
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@end menu
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@ -2470,6 +2460,22 @@ The @option{--hotkey} option associates a hotkey with a menu entry.
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@end deffn
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@node submenu
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@subsection submenu
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@deffn Command submenu @var{title} @
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[@option{--class=class} @dots{}] [@option{--users=users}] @
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[@option{--hotkey=key}] @
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@{ @var{menu entries} @dots{} @}
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This defines a submenu. An entry called @var{title} will be added to the
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menu; when that entry is selected, a new menu will be displayed showing all
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the entries within this submenu.
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All options are the same as in the @command{menuentry} command
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(@pxref{menuentry}).
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@end deffn
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@node General commands
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@section The list of general commands
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@ -2590,6 +2596,7 @@ you forget a command, you can run the command @command{help}
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* drivemap:: Map a drive to another
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* echo:: Display a line of text
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* export:: Export an environment variable
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* false:: Do nothing, unsuccessfully
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* gettext:: Translate a string
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* gptsync:: Fill an MBR based on GPT entries
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* halt:: Shut down your computer
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@ -2607,10 +2614,12 @@ you forget a command, you can run the command @command{help}
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* password_pbkdf2:: Set a hashed password
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* play:: Play a tune
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* pxe_unload:: Unload the PXE environment
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* read:: Read user input
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* reboot:: Reboot your computer
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* search:: Search devices by file, label, or UUID
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* sendkey:: Emulate keystrokes
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* set:: Set an environment variable
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* true:: Do nothing, successfully
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* unset:: Unset an environment variable
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* uppermem:: Set the upper memory size
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@end menu
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@ -2853,6 +2862,15 @@ to subsidiary configuration files loaded using @command{configfile}.
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@end deffn
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@node false
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@subsection false
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@deffn Command false
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Do nothing, unsuccessfully. This is mainly useful in control constructs
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such as @code{if} and @code{while} (@pxref{Shell-like scripting}).
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@end deffn
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@node gettext
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@subsection gettext
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@ -3106,6 +3124,16 @@ This command is only available on PC BIOS systems.
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@end deffn
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@node read
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@subsection read
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@deffn Command read [var]
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Read a line of input from the user. If an environment variable @var{var} is
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given, set that environment variable to the line of input that was read,
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with no terminating newline.
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@end deffn
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@node reboot
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@subsection reboot
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@ -3294,6 +3322,15 @@ arguments, print all environment variables with their values.
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@end deffn
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@node true
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@subsection true
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@deffn Command true
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Do nothing, successfully. This is mainly useful in control constructs such
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as @code{if} and @code{while} (@pxref{Shell-like scripting}).
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@end deffn
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@node unset
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@subsection unset
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