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#
# For a description of the syntax of this configuration file,
# see scripts/kbuild/config-language.txt.
#
menu "Another Bourne-like Shell"
choice
prompt "Choose your default shell"
default CONFIG_FEATURE_SH_IS_NONE
help
Choose a shell. The ash shell is the most bash compatible
and full featured one.
config CONFIG_FEATURE_SH_IS_ASH
select CONFIG_ASH
bool "ash"
config CONFIG_FEATURE_SH_IS_HUSH
select CONFIG_HUSH
bool "hush"
config CONFIG_FEATURE_SH_IS_LASH
select CONFIG_LASH
bool "lash"
config CONFIG_FEATURE_SH_IS_MSH
select CONFIG_MSH
bool "msh"
config CONFIG_FEATURE_SH_IS_NONE
bool "none"
endchoice
config CONFIG_ASH
bool "ash"
default y
help
Tha 'ash' shell adds about 60k in the default configuration and is
the most complete and most pedantically correct shell included with
busybox. This shell is actually a derivative of the Debian 'dash'
shell (by Herbert Xu), which was created by porting the 'ash' shell
(written by Kenneth Almquist) from NetBSD.
comment "Ash Shell Options"
depends on CONFIG_ASH
config CONFIG_ASH_JOB_CONTROL
bool " Enable Job control"
default y
depends on CONFIG_ASH
help
Enable job control in the ash shell.
config CONFIG_ASH_ALIAS
bool " Enable alias support"
default y
depends on CONFIG_ASH
help
Enable alias support in the ash shell.
config CONFIG_ASH_MATH_SUPPORT
bool " Enable Posix math support"
default y
depends on CONFIG_ASH
help
Enable math support in the ash shell.
config CONFIG_ASH_GETOPTS
bool " Enable getopt builtin to parse positional parameters"
default n
depends on CONFIG_ASH
help
Enable builtin getopt in the ash shell.
config CONFIG_ASH_CMDCMD
bool " Enable cmdcmd to override shell builtins"
default n
depends on CONFIG_ASH
help
Enable support for the ash 'command' builtin, which allows
you to run the specified command with the specified arguments,
even when there is an ash builtin command with the same name.
config CONFIG_ASH_MAIL
bool " Check for new mail on interactive shells"
default y
depends on CONFIG_ASH
help
Enable "check for new mail" in the ash shell.
config CONFIG_ASH_OPTIMIZE_FOR_SIZE
bool " Optimize for size instead of speed"
default y
depends on CONFIG_ASH
help
Compile ash for reduced size at price of speed.
config CONFIG_HUSH
bool "hush"
default n
help
hush is a very small shell (just 18k) and it has fairly complete
Bourne shell grammar. It even handles all the normal flow control
options such as if/then/elif/else/fi, for/in/do/done, while loops,
etc.
It does not handle case/esac, select, function, here documents ( <<
word ), arithmetic expansion, aliases, brace expansion, tilde
expansion, &> and >& redirection of stdout+stderr, etc.
config CONFIG_LASH
bool "lash"
default n
help
lash is the very smallest shell (adds just 10k) and it is quite
usable as a command prompt, but it is not suitable for any but the
most trivial scripting (such as an initrd that calls insmod a few
times) since it does not understand any Bourne shell grammar. It
does handle pipes, redirects, and job control though. Adding in
command editing makes it a very nice lightweight command prompt.
config CONFIG_MSH
bool "msh"
default n
help
The minix shell (adds just 30k) is quite complete and handles things
like for/do/done, case/esac and all the things you expect a Bourne
shell to do. It is not always pedantically correct about Bourne
shell grammar (try running the shell testscript "tests/sh.testcases"
on it and compare vs bash) but for most things it works quite well.
It also uses only vfork, so it can be used on uClinux systems.
comment "Bourne Shell Options"
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
config CONFIG_FEATURE_SH_EXTRA_QUIET
bool "Hide message on interactive shell startup"
default n
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
help
Remove the busybox introduction when starting a shell.
config CONFIG_FEATURE_SH_STANDALONE_SHELL
bool "Standalone shell"
default n
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
help
Have all the busybox commands built into the shell, creating
a standalone shell.
config CONFIG_FEATURE_SH_APPLETS_ALWAYS_WIN
bool "Standalone shell -- applets always win"
default n
depends on CONFIG_FEATURE_SH_STANDALONE_SHELL
help
Use a command builtin to the shell over one with the same name,
that may be on the system.
config CONFIG_FEATURE_COMMAND_EDITING
bool "command line editing"
default n
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
help
Enable command editing in shell.
config CONFIG_FEATURE_COMMAND_HISTORY
int "history size"
default 15
depends on CONFIG_FEATURE_COMMAND_EDITING
help
Specify command history size in shell.
config CONFIG_FEATURE_COMMAND_SAVEHISTORY
bool "history saving"
default n
depends on CONFIG_ASH && CONFIG_FEATURE_COMMAND_EDITING
help
Enable history saving in ash shell.
config CONFIG_FEATURE_COMMAND_TAB_COMPLETION
bool "tab completion"
default n
depends on CONFIG_FEATURE_COMMAND_EDITING
help
Enable tab completion in shell.
config CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
bool "username completion"
default n
depends on CONFIG_FEATURE_COMMAND_TAB_COMPLETION
help
Enable username completion in shell.
config CONFIG_FEATURE_SH_FANCY_PROMPT
bool "Fancy shell prompts"
default n
depends on CONFIG_FEATURE_COMMAND_EDITING
help
Setting this option allows for prompts to use things like \w and
\$ and also using escape codes.
endmenu
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