default CONFIG_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
select CONFIG_ASH
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 derivitive the Debian 'dash' shell
- (by Herbert Xu), which was created by porting the 'ash' shell
- (written by Kenneth Almquist) from NetBSD.
+ 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
help
Enable math support in the ash shell.
+config CONFIG_ASH_MATH_SUPPORT_64
+ bool " Extend Posix math support to 64 bit"
+ default n
+ depends on CONFIG_ASH_MATH_SUPPORT
+ help
+ 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_GETOPTS
- bool " Enable getopt builtin to parse positional parameters"
+ bool " Enable getopts builtin to parse positional parameters"
default n
depends on CONFIG_ASH
help
- Enable builtin getopt in the ash shell.
+ Enable getopts builtin in the ash shell.
config CONFIG_ASH_CMDCMD
bool " Enable cmdcmd to override shell builtins"
help
Compile ash for reduced size at price of speed.
+config CONFIG_ASH_RANDOM_SUPPORT
+ bool " Enable pseudorandom generator and variable $RANDOM"
+ default n
+ depends on CONFIG_ASH
+ help
+ Enable pseudorandom generator and dynamic variable "$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 CONFIG_HUSH
bool "hush"
default n
help
- hush is very small shell (just 18k) and it has fairly complete Bourne
- shell grammer. It even handles all the normal flow control options
- such as if/then/elif/else/fi, for/in/do/done, while loops, etc.
+ 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
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 grammer. It
+ 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.
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 grammer (try running the shell testscript "tests/sh.testcases"
+ 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_COMMAND_EDITING
- bool "command line editing"
+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
- Enable command editing in shell.
-
-config CONFIG_FEATURE_COMMAND_SAVEHISTORY
- bool " history saving"
- default n
- depends on CONFIG_ASH
- help
- Enable history saving in ash shell.
+ Remove the busybox introduction when starting a shell.
-config CONFIG_FEATURE_COMMAND_TAB_COMPLETION
- bool "tab completion"
+config CONFIG_FEATURE_SH_STANDALONE_SHELL
+ bool "Standalone shell"
default n
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
help
- Enable tab completion in shell.
+ 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 staticly linked version of busybox
+ for use as a rescue shell, in the event that you screw up your system.
-config CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
- bool "username completion"
+ 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 CONFIG_FEATURE_COMMAND_EDITING
+ bool "command line editing"
default n
depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
help
- Enable username completion in shell.
+ Enable command editing in shell.
config CONFIG_FEATURE_COMMAND_HISTORY
int "history size"
default 15
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on CONFIG_FEATURE_COMMAND_EDITING
help
Specify command history size in shell.
-config CONFIG_FEATURE_SH_STANDALONE_SHELL
- bool "Standalone shell"
+config CONFIG_FEATURE_COMMAND_SAVEHISTORY
+ bool "history saving"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on CONFIG_ASH && CONFIG_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 CONFIG_FEATURE_COMMAND_TAB_COMPLETION
+ bool "tab completion"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ 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
- Use a command builtin to the shell over one with the same name,
- that may be on the system.
+ Enable username completion in shell.
config CONFIG_FEATURE_SH_FANCY_PROMPT
bool "Fancy shell prompts"
default n
- depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH
+ depends on CONFIG_FEATURE_COMMAND_EDITING
help
Setting this option allows for prompts to use things like \w and
\$ and also using escape codes.
-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.
-
endmenu
-
projects / oweals / busybox.git / blobdiff