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230 lines
7.2 KiB
Plaintext
230 lines
7.2 KiB
Plaintext
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#
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# For a description of the syntax of this configuration file,
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# see scripts/kbuild/config-language.txt.
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#
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menu "Another Bourne-like Shell"
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choice
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prompt "Choose your default shell"
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default BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
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help
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Choose a shell. The ash shell is the most bash compatible
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and full featured one.
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config BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
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select BUSYBOX_CONFIG_ASH
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bool "ash"
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config BUSYBOX_CONFIG_FEATURE_SH_IS_HUSH
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select BUSYBOX_CONFIG_HUSH
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bool "hush"
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config BUSYBOX_CONFIG_FEATURE_SH_IS_LASH
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select BUSYBOX_CONFIG_LASH
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bool "lash"
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config BUSYBOX_CONFIG_FEATURE_SH_IS_MSH
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select BUSYBOX_CONFIG_MSH
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bool "msh"
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config BUSYBOX_CONFIG_FEATURE_SH_IS_NONE
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bool "none"
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endchoice
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config BUSYBOX_CONFIG_ASH
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bool "ash"
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default y
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help
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Tha 'ash' shell adds about 60k in the default configuration and is
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the most complete and most pedantically correct shell included with
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busybox. This shell is actually a derivative of the Debian 'dash'
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shell (by Herbert Xu), which was created by porting the 'ash' shell
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(written by Kenneth Almquist) from NetBSD.
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comment "Ash Shell Options"
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depends on BUSYBOX_CONFIG_ASH
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config BUSYBOX_CONFIG_ASH_JOB_CONTROL
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bool " Enable Job control"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable job control in the ash shell.
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config BUSYBOX_CONFIG_ASH_ALIAS
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bool " Enable alias support"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable alias support in the ash shell.
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config BUSYBOX_CONFIG_ASH_MATH_SUPPORT
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bool " Enable Posix math support"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable math support in the ash shell.
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config BUSYBOX_CONFIG_ASH_MATH_SUPPORT_64
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bool " Extend Posix math support to 64 bit"
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default n
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depends on BUSYBOX_CONFIG_ASH_MATH_SUPPORT
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help
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Enable 64-bit math support in the ash shell. This will make
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the shell slightly larger, but will allow computation with very
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large numbers.
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config BUSYBOX_CONFIG_ASH_GETOPTS
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bool " Enable getopts builtin to parse positional parameters"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable getopts builtin in the ash shell.
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config BUSYBOX_CONFIG_ASH_CMDCMD
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bool " Enable cmdcmd to override shell builtins"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable support for the ash 'command' builtin, which allows
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you to run the specified command with the specified arguments,
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even when there is an ash builtin command with the same name.
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config BUSYBOX_CONFIG_ASH_MAIL
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bool " Check for new mail on interactive shells"
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default n
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable "check for new mail" in the ash shell.
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config BUSYBOX_CONFIG_ASH_OPTIMIZE_FOR_SIZE
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bool " Optimize for size instead of speed"
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default y
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depends on BUSYBOX_CONFIG_ASH
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help
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Compile ash for reduced size at price of speed.
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config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT
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bool " Enable pseudorandom generator and variable $RANDOM"
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default n
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depends on BUSYBOX_CONFIG_ASH
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help
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Enable pseudorandom generator and dynamic variable "$RANDOM".
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Each read of "$RANDOM" will generate a new pseudorandom value.
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You can reset the generator by using a specified start value.
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After "unset RANDOM" then generator will switch off and this
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variable will no longer have special treatment.
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config BUSYBOX_CONFIG_HUSH
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bool "hush"
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default n
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help
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hush is a very small shell (just 18k) and it has fairly complete
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Bourne shell grammar. It even handles all the normal flow control
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options such as if/then/elif/else/fi, for/in/do/done, while loops,
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etc.
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It does not handle case/esac, select, function, here documents ( <<
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word ), arithmetic expansion, aliases, brace expansion, tilde
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expansion, &> and >& redirection of stdout+stderr, etc.
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config BUSYBOX_CONFIG_LASH
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bool "lash"
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default n
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help
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lash is the very smallest shell (adds just 10k) and it is quite
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usable as a command prompt, but it is not suitable for any but the
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most trivial scripting (such as an initrd that calls insmod a few
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times) since it does not understand any Bourne shell grammar. It
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does handle pipes, redirects, and job control though. Adding in
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command editing makes it a very nice lightweight command prompt.
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config BUSYBOX_CONFIG_MSH
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bool "msh"
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default n
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help
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The minix shell (adds just 30k) is quite complete and handles things
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like for/do/done, case/esac and all the things you expect a Bourne
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shell to do. It is not always pedantically correct about Bourne
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shell grammar (try running the shell testscript "tests/sh.testcases"
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on it and compare vs bash) but for most things it works quite well.
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It also uses only vfork, so it can be used on uClinux systems.
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comment "Bourne Shell Options"
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depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
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config BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET
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bool "Hide message on interactive shell startup"
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default n
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depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
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help
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Remove the busybox introduction when starting a shell.
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config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE_SHELL
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bool "Standalone shell"
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default n
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depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
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help
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This option causes the selected busybox shell to use busybox applets
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in preference to executables in the PATH whenever possible. For
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example, entering the command 'ifconfig' into the shell would cause
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busybox to use the ifconfig busybox applet. Specifying the fully
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qualified executable name, such as '/sbin/ifconfig' will still
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execute the /sbin/ifconfig executable on the filesystem. This option
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is generally used when creating a staticly linked version of busybox
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for use as a rescue shell, in the event that you screw up your system.
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Note that when using this option, the shell will attempt to directly
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run '/bin/busybox'. If you do not have the busybox binary sitting in
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that exact location with that exact name, this option will not work at
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all.
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config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
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bool "command line editing"
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default y
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depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
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help
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Enable command editing in shell.
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config BUSYBOX_CONFIG_FEATURE_COMMAND_HISTORY
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int "history size"
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default 15
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depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
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help
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Specify command history size in shell.
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config BUSYBOX_CONFIG_FEATURE_COMMAND_SAVEHISTORY
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bool "history saving"
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default n
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depends on BUSYBOX_CONFIG_ASH && BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
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help
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Enable history saving in ash shell.
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config BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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bool "tab completion"
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default y
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depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
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help
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Enable tab completion in shell.
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config BUSYBOX_CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
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bool "username completion"
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default n
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depends on BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
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help
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Enable username completion in shell.
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config BUSYBOX_CONFIG_FEATURE_SH_FANCY_PROMPT
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bool "Fancy shell prompts"
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default y
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depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
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help
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Setting this option allows for prompts to use things like \w and
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\$ and also using escape codes.
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endmenu
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