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author | Roland Pesch <pesch@cygnus> | 1991-05-23 00:14:26 +0000 |
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committer | Roland Pesch <pesch@cygnus> | 1991-05-23 00:14:26 +0000 |
commit | 9bcc06ef1645086025bd7a5ecbe423f7fc1d6fc8 (patch) | |
tree | e0110d4fdb8b91b4e49dbd9029e42a458ca02dfc /gdb/doc/gdb.cmds-m4 | |
parent | 5ad1d8304204d3e81726319bf7262e571156f9da (diff) | |
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diff --git a/gdb/doc/gdb.cmds-m4 b/gdb/doc/gdb.cmds-m4 new file mode 100755 index 0000000..1d3b34f --- /dev/null +++ b/gdb/doc/gdb.cmds-m4 @@ -0,0 +1,160 @@ +_dnl__ Copyright (c) 1988 1989 1990 1991 Free Software Foundation, Inc. +_dnl__ This file is part of the source for the GDB manual. +_dnl__ $Id$ +@node Commands, Running, Invocation, Top +@chapter _GDBN__ Commands + +@menu +* Command Syntax:: Command Syntax +* Help:: Getting Help +@end menu + +@node Command Syntax, Help, Commands, Commands +@section Command Syntax +A _GDBN__ command is a single line of input. There is no limit on how long +it can be. It starts with a command name, which is followed by arguments +whose meaning depends on the command name. For example, the command +@code{step} accepts an argument which is the number of times to step, +as in @samp{step 5}. You can also use the @code{step} command with +no arguments. Some command names do not allow any arguments. + +@cindex abbreviation +_GDBN__ command names may always be truncated if that abbreviation is +unambiguous. Other possible command abbreviations are listed in the +documentation for individual commands. Sometimes even ambiguous +abbreviations are allowed; for example, @code{s} is specially defined as +equivalent to @code{step} even though there are other commands whose +names start with @code{s}. + +@cindex repeating commands +A blank line as input to _GDBN__ means to repeat the previous command. +Certain commands (for example, @code{run}) will not repeat this way; +these are commands for which unintentional repetition might cause +trouble and which you are unlikely to want to repeat. + +The @code{list} and @code{x} commands construct new arguments when +repeated, rather than repeating exactly as typed, to permit easy +scanning of source or memory. + +@kindex # +@cindex comment +A line of input starting with @kbd{#} is a comment; it does nothing. +This is useful mainly in command files (@xref{Command Files}). + +@node Help, , Command Syntax, Commands +@section Getting Help +@cindex online documentation +@kindex help +You can always ask _GDBN__ itself for information on its commands, using the +command @code{help}. + +@table @code +@item help +@itemx h +@kindex h +You can use @code{help} (abbreviated @code{h}) with no arguments to +display a short list of named categories of commands: +@smallexample +(_GDBP__) help +List of classes of commands: + +running -- Running the program +stack -- Examining the stack +data -- Examining data +breakpoints -- Making program stop at certain points +files -- Specifying and examining files +status -- Status inquiries +support -- Support facilities +user-defined -- User-defined commands +aliases -- Aliases of other commands +obscure -- Obscure features + +Type "help" followed by a class name for a list of commands in that class. +Type "help" followed by command name for full documentation. +Command name abbreviations are allowed if unambiguous. +(_GDBP__) +@end smallexample + +@item help @var{category} +Using one of the general help categories as an argument, you can get a +list of the individual commands in a category. For example, here is the +help display for category @code{status}: +@smallexample +(_GDBP__) help status +Status inquiries. + +List of commands: + +show -- Generic command for showing things set with "set" +info -- Generic command for printing status + +Type "help" followed by command name for full documentation. +Command name abbreviations are allowed if unambiguous. +(_GDBP__) +@end smallexample + +@item help @var{command} +With a command name as @code{help} argument, _GDBN__ will display a +short paragraph on how to use that command. +@end table + +In addition to @code{help}, you can use the _GDBN__ commands @code{info} +and @code{show} to inquire about the state of your program, or the state +of _GDBN__ itself. Both commands support many topics of inquiry; this +manual introduces each of them in the appropriate context. The listings +under @code{info} and under @code{show} in the Index point to +all the sub-commands. +@c FIXME: @pxref{Index} used to be here, but even though it shows up in +@c FIXME...the 'aux' file with a pageno the xref can't find it. + +@group +@table @code +@item info +@kindex info +@kindex i +This command (abbreviated @code{i}) is for describing the state of your +program; for example, it can list the arguments given to your program +(@code{info args}), the registers currently in use (@code{info +registers}), or the breakpoints you've set (@code{info breakpoints}). +You can get a complete list of the @code{info} sub-commands with +@w{@code{help info}}. + +@kindex show +@item show +In contrast, @code{show} is for describing the state of _GDBN__ itself. +You can change most of the things you can @code{show}, by using the +related command @code{set}; for example, you can control what number +system is used for displays with @code{set radix}, or simply inquire +which is currently in use with @code{show radix}. + +@kindex info set +To display all the settable parameters and their current +values, you can use @code{show} with no arguments; you may also use +@code{info set}. Both commands produce the same display. +@c FIXME: "info set" violates the rule that "info" is for state of +@c FIXME...program. Ck w/ GNU: "info set" to be called something else, +@c FIXME...or change desc of rule---eg "state of prog and debugging session"? +@end table +@end group + +Here are three miscellaneous @code{show} subcommands, all of which are +exceptional in lacking corresponding @code{set} commands: + +@table @code +@kindex show version +@item show version +Show what version of _GDBN__ is running. You should include this +information in _GDBN__ bug-reports. If multiple versions of _GDBN__ are +in use at your site, you may occasionally want to make sure what version +of _GDBN__ you're running; as _GDBN__ evolves, new commands are +introduced, and old ones may wither away. The version number is also +announced when you start _GDBN__ with no arguments. + +@kindex show copying +@item show copying +Display information about permission for copying _GDBN__. + +@kindex show warranty +@item show warranty +Display the GNU ``NO WARRANTY'' statement. +@end table |