# see scripts/kbuild/config-language.txt.
#
-menu "Another Bourne-like Shell"
+menu "Shells"
choice
prompt "Choose your default shell"
- default "none"
+ default FEATURE_SH_IS_NONE
help
Choose a shell. The ash shell is the most bash compatible
- and full featured.
+ and full featured one.
-config CONFIG_FEATURE_SH_IS_ASH
+config FEATURE_SH_IS_ASH
+ select ASH
bool "ash"
-config CONFIG_FEATURE_SH_IS_HUSH
+config FEATURE_SH_IS_HUSH
+ select HUSH
bool "hush"
-config CONFIG_FEATURE_SH_IS_LASH
+config FEATURE_SH_IS_LASH
+ select LASH
bool "lash"
-config CONFIG_FEATURE_SH_IS_MSH
+config FEATURE_SH_IS_MSH
+ select MSH
bool "msh"
-config CONFIG_FEATURE_SH_IS_NONE
+config FEATURE_SH_IS_NONE
bool "none"
endchoice
-if CONFIG_FEATURE_SH_IS_ASH
- config CONFIG_ASH
- default y
-
- comment "ash (forced enabled as default shell)"
-endif
-
-if !CONFIG_FEATURE_SH_IS_ASH
-config CONFIG_ASH
+config ASH
bool "ash"
- default y
+ default n
+ select TEST
help
- Make sh a link to ash.
-endif
+ 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
+ depends on ASH
-config CONFIG_ASH_JOB_CONTROL
- bool " Enable Job control"
+config ASH_JOB_CONTROL
+ bool "Job control"
default y
- depends on CONFIG_ASH
+ depends on ASH
help
Enable job control in the ash shell.
-config CONFIG_ASH_ALIAS
- bool " Enable alias support"
+config ASH_READ_NCHARS
+ bool "'read -n N' and 'read -s' support"
+ default n
+ depends on ASH
+ help
+ 'read -n N' will return a value after N characters have been read.
+ 'read -s' will read without echoing the user's input.
+
+config ASH_READ_TIMEOUT
+ bool "'read -t S' support."
+ default n
+ depends on ASH
+ help
+ 'read -t S' will return a value after S seconds have passed.
+ This implementation will allow fractional seconds, expressed
+ as a decimal fraction, e.g. 'read -t 2.5 foo'.
+
+config ASH_ALIAS
+ bool "alias support"
default y
- depends on CONFIG_ASH
+ depends on ASH
help
Enable alias support in the ash shell.
-config CONFIG_ASH_MATH_SUPPORT
- bool " Enable Posix math support"
+config ASH_MATH_SUPPORT
+ bool "Posix math support"
default y
- depends on CONFIG_ASH
+ depends on ASH
help
Enable math support in the ash shell.
-config CONFIG_ASH_GETOPTS
- bool " Enable getopt builtin to parse positional parameters"
+config ASH_MATH_SUPPORT_64
+ bool "Extend Posix math support to 64 bit"
default n
- depends on CONFIG_ASH
+ depends on ASH_MATH_SUPPORT
help
- Enable builtin getopt in the ash shell.
+ Enable 64-bit math support in the ash shell. This will make
+ the shell slightly larger, but will allow computation with very
+ large numbers.
-config CONFIG_ASH_CMDCMD
- bool " Enable cmdcmd to override shell builtins"
+config ASH_GETOPTS
+ bool "Builtin getopt to parse positional parameters"
default n
- depends on CONFIG_ASH
+ depends on ASH
+ help
+ Enable getopts builtin in the ash shell.
+
+config ASH_BUILTIN_ECHO
+ bool "Builtin version of 'echo'"
+ default y
+ select ECHO
+ depends on ASH
+ help
+ Enable support for echo, built in to ash.
+
+config ASH_BUILTIN_TEST
+ bool "Builtin version of 'test'"
+ default y
+ select TEST
+ depends on ASH
+ help
+ Enable support for test, built in to ash.
+
+config ASH_CMDCMD
+ bool "'command' command to override shell builtins"
+ default n
+ depends on 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"
+config ASH_MAIL
+ bool "Check for new mail on interactive shells"
default y
- depends on CONFIG_ASH
+ depends on ASH
help
Enable "check for new mail" in the ash shell.
-config CONFIG_ASH_OPTIMIZE_FOR_SIZE
- bool " Optimize for size instead of speed"
+config ASH_OPTIMIZE_FOR_SIZE
+ bool "Optimize for size instead of speed"
default y
- depends on CONFIG_ASH
+ depends on ASH
help
- Compile ash for reduced size at price of speed.
+ Compile ash for reduced size at the price of speed.
-if CONFIG_FEATURE_SH_IS_HUSH
- config CONFIG_HUSH
- default y
+config ASH_RANDOM_SUPPORT
+ bool "Pseudorandom generator and variable $RANDOM"
+ default n
+ depends on ASH
+ help
+ Enable pseudorandom generator and dynamic variable "$RANDOM".
+ Each read of "$RANDOM" will generate a new pseudorandom value.
+ You can reset the generator by using a specified start value.
+ After "unset RANDOM" then generator will switch off and this
+ variable will no longer have special treatment.
+
+config ASH_EXPAND_PRMT
+ bool "Expand prompt string"
+ default n
+ depends on ASH
+ help
+ "PS#" may be contain volatile content, such as backquote commands.
+ This option recreates the prompt string from the environment
+ variable each time it is displayed.
- comment "hush (forced enabled as default shell)"
-endif
-
-if !CONFIG_FEATURE_SH_IS_HUSH
-config CONFIG_HUSH
+config HUSH
bool "hush"
default n
+ select TRUE
+ select FALSE
+ select TEST
help
- Make sh a link to hush.
-endif
+ 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.
-if CONFIG_FEATURE_SH_IS_LASH
- config CONFIG_LASH
- default y
+ It does not handle case/esac, select, function, here documents ( <<
+ word ), arithmetic expansion, aliases, brace expansion, tilde
+ expansion, &> and >& redirection of stdout+stderr, etc.
- comment "lash (forced enabled as default shell)"
-endif
-if !CONFIG_FEATURE_SH_IS_LASH
-config CONFIG_LASH
+config LASH
bool "lash"
default n
+ select TRUE
+ select FALSE
+ select TEST
help
- Make sh a link to lash.
-endif
+ 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.
-if CONFIG_FEATURE_SH_IS_MSH
- config CONFIG_MSH
- default y
-
- comment "msh (forced enabled as default shell)"
-endif
-if !CONFIG_FEATURE_SH_IS_MSH
-config CONFIG_MSH
+config MSH
bool "msh"
default n
+ select TRUE
+ select FALSE
+ select TEST
help
- Make sh a link to msh.
-endif
-
+ 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
+ depends on MSH || LASH || HUSH || ASH
-config CONFIG_FEATURE_COMMAND_EDITING
- bool "command line editing"
+config FEATURE_SH_EXTRA_QUIET
+ bool "Hide message on interactive shell startup"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on MSH || LASH || HUSH || ASH
help
- Enable command editing in shell.
+ Remove the busybox introduction when starting a shell.
-config CONFIG_FEATURE_COMMAND_SAVEHISTORY
- bool " history saving"
+config FEATURE_SH_STANDALONE_SHELL
+ bool "Standalone shell"
default n
- depends on CONFIG_ASH
+ depends on MSH || LASH || HUSH || ASH
help
- Enable history saving in ash shell.
-
-config CONFIG_FEATURE_COMMAND_TAB_COMPLETION
- bool "tab completion"
+ This option causes the selected busybox shell to use busybox applets
+ in preference to executables in the PATH whenever possible. For
+ example, entering the command 'ifconfig' into the shell would cause
+ busybox to use the ifconfig busybox applet. Specifying the fully
+ qualified executable name, such as '/sbin/ifconfig' will still
+ execute the /sbin/ifconfig executable on the filesystem. This option
+ is generally used when creating a statically linked version of busybox
+ for use as a rescue shell, in the event that you screw up your system.
+
+ Note that this will *also* cause applets to take precedence
+ over shell builtins of the same name. So turning this on will
+ eliminate any performance gained by turning on the builtin "echo"
+ and "test" commands in ash.
+
+ Note that when using this option, the shell will attempt to directly
+ run '/bin/busybox'. If you do not have the busybox binary sitting in
+ that exact location with that exact name, this option will not work at
+ all.
+
+config FEATURE_COMMAND_EDITING
+ bool "Command line editing"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on MSH || LASH || HUSH || ASH
help
- Enable tab completion in shell.
+ Enable command editing in shell.
-config CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
- bool "username completion"
+config FEATURE_COMMAND_EDITING_VI
+ bool "vi-style line editing commands"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on FEATURE_COMMAND_EDITING
help
- Enable username completion in shell.
+ Enable vi-style line editing in the shell. This mode can be
+ turned on and off with "set -o vi" and "set +o vi".
-config CONFIG_FEATURE_COMMAND_HISTORY
- int "history size"
+config FEATURE_COMMAND_HISTORY
+ int "History size"
+ range 0 99999
default 15
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on FEATURE_COMMAND_EDITING
help
Specify command history size in shell.
-config CONFIG_FEATURE_SH_STANDALONE_SHELL
- bool "Standalone shell"
+config FEATURE_COMMAND_SAVEHISTORY
+ bool "History saving"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on ASH && FEATURE_COMMAND_EDITING
help
- Have all the busybox commands built into the shell, creating
- a standalone shell.
+ Enable history saving in ash shell.
-config CONFIG_FEATURE_SH_APPLETS_ALWAYS_WIN
- bool "Standalone shell -- applets always win"
+config FEATURE_COMMAND_TAB_COMPLETION
+ bool "Tab completion"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on FEATURE_COMMAND_EDITING
help
- Use a command builtin to the shell over one with the same name,
- that may be on the system.
+ Enable tab completion in shell.
-config CONFIG_FEATURE_SH_FANCY_PROMPT
- bool "Fancy shell prompts"
+config FEATURE_COMMAND_USERNAME_COMPLETION
+ bool "Username completion"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on FEATURE_COMMAND_TAB_COMPLETION
help
- Setting this option allows for prompts to use things like \w and
- \$ and also using escape codes.
+ Enable username completion in shell.
-config CONFIG_FEATURE_SH_EXTRA_QUIET
- bool "Hide message on interactive shell startup"
+config FEATURE_SH_FANCY_PROMPT
+ bool "Fancy shell prompts"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on FEATURE_COMMAND_EDITING
help
- Remove the busybox introduction when starting a shell.
+ Setting this option allows for prompts to use things like \w and
+ \$ and also using escape codes.
endmenu
-
projects / oweals / busybox.git / blobdiff