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+# DO NOT EDIT. This file is generated from Config.src
+#
+# For a description of the syntax of this configuration file,
+# see scripts/kbuild/config-language.txt.
+#
+
+menu "Shells"
+
+config BUSYBOX_CONFIG_ASH
+ bool "ash"
+ default BUSYBOX_DEFAULT_ASH
+ depends on !BUSYBOX_CONFIG_NOMMU
+ 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.
+
+config BUSYBOX_CONFIG_ASH_BASH_COMPAT
+ bool "bash-compatible extensions"
+ default BUSYBOX_DEFAULT_ASH_BASH_COMPAT
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable bash-compatible extensions.
+
+config BUSYBOX_CONFIG_ASH_IDLE_TIMEOUT
+ bool "Idle timeout variable"
+ default BUSYBOX_DEFAULT_ASH_IDLE_TIMEOUT
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enables bash-like auto-logout after $TMOUT seconds of idle time.
+
+config BUSYBOX_CONFIG_ASH_JOB_CONTROL
+ bool "Job control"
+ default BUSYBOX_DEFAULT_ASH_JOB_CONTROL
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable job control in the ash shell.
+
+config BUSYBOX_CONFIG_ASH_ALIAS
+ bool "Alias support"
+ default BUSYBOX_DEFAULT_ASH_ALIAS
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable alias support in the ash shell.
+
+config BUSYBOX_CONFIG_ASH_GETOPTS
+ bool "Builtin getopt to parse positional parameters"
+ default BUSYBOX_DEFAULT_ASH_GETOPTS
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable support for getopts builtin in ash.
+
+config BUSYBOX_CONFIG_ASH_BUILTIN_ECHO
+ bool "Builtin version of 'echo'"
+ default BUSYBOX_DEFAULT_ASH_BUILTIN_ECHO
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable support for echo builtin in ash.
+
+config BUSYBOX_CONFIG_ASH_BUILTIN_PRINTF
+ bool "Builtin version of 'printf'"
+ default BUSYBOX_DEFAULT_ASH_BUILTIN_PRINTF
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable support for printf builtin in ash.
+
+config BUSYBOX_CONFIG_ASH_BUILTIN_TEST
+ bool "Builtin version of 'test'"
+ default BUSYBOX_DEFAULT_ASH_BUILTIN_TEST
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable support for test builtin in ash.
+
+config BUSYBOX_CONFIG_ASH_CMDCMD
+ bool "'command' command to override shell builtins"
+ default BUSYBOX_DEFAULT_ASH_CMDCMD
+ depends on BUSYBOX_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 BUSYBOX_CONFIG_ASH_MAIL
+ bool "Check for new mail on interactive shells"
+ default BUSYBOX_DEFAULT_ASH_MAIL
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable "check for new mail" function in the ash shell.
+
+config BUSYBOX_CONFIG_ASH_OPTIMIZE_FOR_SIZE
+ bool "Optimize for size instead of speed"
+ default BUSYBOX_DEFAULT_ASH_OPTIMIZE_FOR_SIZE
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Compile ash for reduced size at the price of speed.
+
+config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT
+ bool "Pseudorandom generator and $RANDOM variable"
+ default BUSYBOX_DEFAULT_ASH_RANDOM_SUPPORT
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ Enable pseudorandom generator and dynamic variable "$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" the generator will switch off and this
+ variable will no longer have special treatment.
+
+config BUSYBOX_CONFIG_ASH_EXPAND_PRMT
+ bool "Expand prompt string"
+ default BUSYBOX_DEFAULT_ASH_EXPAND_PRMT
+ depends on BUSYBOX_CONFIG_ASH
+ help
+ "PS#" may contain volatile content, such as backquote commands.
+ This option recreates the prompt string from the environment
+ variable each time it is displayed.
+
+config BUSYBOX_CONFIG_CTTYHACK
+ bool "cttyhack"
+ default BUSYBOX_DEFAULT_CTTYHACK
+ help
+ One common problem reported on the mailing list is the "can't
+ access tty; job control turned off" error message, which typically
+ appears when one tries to use a shell with stdin/stdout on
+ /dev/console.
+ This device is special - it cannot be a controlling tty.
+
+ The proper solution is to use the correct device instead of
+ /dev/console.
+
+ cttyhack provides a "quick and dirty" solution to this problem.
+ It analyzes stdin with various ioctls, trying to determine whether
+ it is a /dev/ttyN or /dev/ttySN (virtual terminal or serial line).
+ On Linux it also checks sysfs for a pointer to the active console.
+ If cttyhack is able to find the real console device, it closes
+ stdin/out/err and reopens that device.
+ Then it executes the given program. Opening the device will make
+ that device a controlling tty. This may require cttyhack
+ to be a session leader.
+
+ Example for /etc/inittab (for busybox init):
+
+ ::respawn:/bin/cttyhack /bin/sh
+
+ Starting an interactive shell from boot shell script:
+
+ setsid cttyhack sh
+
+ Giving controlling tty to shell running with PID 1:
+
+ # exec cttyhack sh
+
+ Without cttyhack, you need to know exact tty name,
+ and do something like this:
+
+ # exec setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
+
+config BUSYBOX_CONFIG_HUSH
+ bool "hush"
+ default BUSYBOX_DEFAULT_HUSH
+ help
+ hush is a small shell (25k). It handles the normal flow control
+ constructs such as if/then/elif/else/fi, for/in/do/done, while loops,
+ case/esac. Redirections, here documents, $((arithmetic))
+ and functions are supported.
+
+ It will compile and work on no-mmu systems.
+
+ It does not handle select, aliases, tilde expansion,
+ &>file and >&file redirection of stdout+stderr.
+
+config BUSYBOX_CONFIG_HUSH_BASH_COMPAT
+ bool "bash-compatible extensions"
+ default BUSYBOX_DEFAULT_HUSH_BASH_COMPAT
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable bash-compatible extensions.
+
+config BUSYBOX_CONFIG_HUSH_BRACE_EXPANSION
+ bool "Brace expansion"
+ default BUSYBOX_DEFAULT_HUSH_BRACE_EXPANSION
+ depends on BUSYBOX_CONFIG_HUSH_BASH_COMPAT
+ help
+ Enable {abc,def} extension.
+
+config BUSYBOX_CONFIG_HUSH_HELP
+ bool "help builtin"
+ default BUSYBOX_DEFAULT_HUSH_HELP
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable help builtin in hush. Code size + ~1 kbyte.
+
+config BUSYBOX_CONFIG_HUSH_INTERACTIVE
+ bool "Interactive mode"
+ default BUSYBOX_DEFAULT_HUSH_INTERACTIVE
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable interactive mode (prompt and command editing).
+ Without this, hush simply reads and executes commands
+ from stdin just like a shell script from a file.
+ No prompt, no PS1/PS2 magic shell variables.
+
+config BUSYBOX_CONFIG_HUSH_SAVEHISTORY
+ bool "Save command history to .hush_history"
+ default BUSYBOX_DEFAULT_HUSH_SAVEHISTORY
+ depends on BUSYBOX_CONFIG_HUSH_INTERACTIVE && BUSYBOX_CONFIG_FEATURE_EDITING_SAVEHISTORY
+ help
+ Enable history saving in hush.
+
+config BUSYBOX_CONFIG_HUSH_JOB
+ bool "Job control"
+ default BUSYBOX_DEFAULT_HUSH_JOB
+ depends on BUSYBOX_CONFIG_HUSH_INTERACTIVE
+ help
+ Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current
+ command (not entire shell), fg/bg builtins work. Without this option,
+ "cmd &" still works by simply spawning a process and immediately
+ prompting for next command (or executing next command in a script),
+ but no separate process group is formed.
+
+config BUSYBOX_CONFIG_HUSH_TICK
+ bool "Process substitution"
+ default BUSYBOX_DEFAULT_HUSH_TICK
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable process substitution `command` and $(command) in hush.
+
+config BUSYBOX_CONFIG_HUSH_IF
+ bool "Support if/then/elif/else/fi"
+ default BUSYBOX_DEFAULT_HUSH_IF
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable if/then/elif/else/fi in hush.
+
+config BUSYBOX_CONFIG_HUSH_LOOPS
+ bool "Support for, while and until loops"
+ default BUSYBOX_DEFAULT_HUSH_LOOPS
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable for, while and until loops in hush.
+
+config BUSYBOX_CONFIG_HUSH_CASE
+ bool "Support case ... esac statement"
+ default BUSYBOX_DEFAULT_HUSH_CASE
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable case ... esac statement in hush. +400 bytes.
+
+config BUSYBOX_CONFIG_HUSH_FUNCTIONS
+ bool "Support funcname() { commands; } syntax"
+ default BUSYBOX_DEFAULT_HUSH_FUNCTIONS
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable support for shell functions in hush. +800 bytes.
+
+config BUSYBOX_CONFIG_HUSH_LOCAL
+ bool "Support local builtin"
+ default BUSYBOX_DEFAULT_HUSH_LOCAL
+ depends on BUSYBOX_CONFIG_HUSH_FUNCTIONS
+ help
+ Enable support for local variables in functions.
+
+config BUSYBOX_CONFIG_HUSH_RANDOM_SUPPORT
+ bool "Pseudorandom generator and $RANDOM variable"
+ default BUSYBOX_DEFAULT_HUSH_RANDOM_SUPPORT
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ Enable pseudorandom generator and dynamic variable "$RANDOM".
+ Each read of "$RANDOM" will generate a new pseudorandom value.
+
+config BUSYBOX_CONFIG_HUSH_EXPORT_N
+ bool "Support 'export -n' option"
+ default BUSYBOX_DEFAULT_HUSH_EXPORT_N
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ export -n unexports variables. It is a bash extension.
+
+config BUSYBOX_CONFIG_HUSH_MODE_X
+ bool "Support 'hush -x' option and 'set -x' command"
+ default BUSYBOX_DEFAULT_HUSH_MODE_X
+ depends on BUSYBOX_CONFIG_HUSH
+ help
+ This instructs hush to print commands before execution.
+ Adds ~300 bytes.
+
+config BUSYBOX_CONFIG_MSH
+ bool "msh (deprecated: aliased to hush)"
+ default BUSYBOX_DEFAULT_MSH
+ select BUSYBOX_CONFIG_HUSH
+ help
+ msh is deprecated and will be removed, please migrate to hush.
+
+
+choice
+ prompt "Choose which shell is aliased to 'sh' name"
+ default BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
+ help
+ Choose which shell you want to be executed by 'sh' alias.
+ The ash shell is the most bash compatible and full featured one.
+
+# note: cannot use "select ASH" here, it breaks "make allnoconfig"
+config BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
+ depends on BUSYBOX_CONFIG_ASH
+ bool "ash"
+ depends on !BUSYBOX_CONFIG_NOMMU
+
+config BUSYBOX_CONFIG_FEATURE_SH_IS_HUSH
+ depends on BUSYBOX_CONFIG_HUSH
+ bool "hush"
+
+config BUSYBOX_CONFIG_FEATURE_SH_IS_NONE
+ bool "none"
+
+endchoice
+
+choice
+ prompt "Choose which shell is aliased to 'bash' name"
+ default BUSYBOX_CONFIG_FEATURE_BASH_IS_NONE
+ help
+ Choose which shell you want to be executed by 'bash' alias.
+ The ash shell is the most bash compatible and full featured one.
+
+ Note that selecting this option does not switch on any bash
+ compatibility code. It merely makes it possible to install
+ /bin/bash (sym)link and run scripts which start with
+ #!/bin/bash line.
+
+ Many systems use it in scripts which use bash-specific features,
+ even simple ones like $RANDOM. Without this option, busybox
+ can't be used for running them because it won't recongnize
+ "bash" as a supported applet name.
+
+config BUSYBOX_CONFIG_FEATURE_BASH_IS_ASH
+ depends on BUSYBOX_CONFIG_ASH
+ bool "ash"
+ depends on !BUSYBOX_CONFIG_NOMMU
+
+config BUSYBOX_CONFIG_FEATURE_BASH_IS_HUSH
+ depends on BUSYBOX_CONFIG_HUSH
+ bool "hush"
+
+config BUSYBOX_CONFIG_FEATURE_BASH_IS_NONE
+ bool "none"
+
+endchoice
+
+
+config BUSYBOX_CONFIG_SH_MATH_SUPPORT
+ bool "POSIX math support"
+ default BUSYBOX_DEFAULT_SH_MATH_SUPPORT
+ depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH
+ help
+ Enable math support in the shell via $((...)) syntax.
+
+config BUSYBOX_CONFIG_SH_MATH_SUPPORT_64
+ bool "Extend POSIX math support to 64 bit"
+ default BUSYBOX_DEFAULT_SH_MATH_SUPPORT_64
+ depends on BUSYBOX_CONFIG_SH_MATH_SUPPORT
+ help
+ Enable 64-bit math support in the shell. This will make the shell
+ slightly larger, but will allow computation with very large numbers.
+ This is not in POSIX, so do not rely on this in portable code.
+
+config BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET
+ bool "Hide message on interactive shell startup"
+ default BUSYBOX_DEFAULT_FEATURE_SH_EXTRA_QUIET
+ depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
+ help
+ Remove the busybox introduction when starting a shell.
+
+config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE
+ bool "Standalone shell"
+ default BUSYBOX_DEFAULT_FEATURE_SH_STANDALONE
+ depends on (BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH) && BUSYBOX_CONFIG_FEATURE_PREFER_APPLETS
+ help
+ This option causes busybox shells 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.
+
+ This is implemented by re-execing /proc/self/exe (typically)
+ with right parameters. Some selected applets ("NOFORK" applets)
+ can even be executed without creating new process.
+ Instead, busybox will call <applet>_main() internally.
+
+ However, this causes problems in chroot jails without mounted /proc
+ and with ps/top (command name can be shown as 'exe' for applets
+ started this way).
+# untrue?
+# 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.
+# untrue?
+# 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 BUSYBOX_CONFIG_FEATURE_SH_NOFORK
+ bool "Run 'nofork' applets directly"
+ default BUSYBOX_DEFAULT_FEATURE_SH_NOFORK
+ depends on (BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH) && BUSYBOX_CONFIG_FEATURE_PREFER_APPLETS
+ help
+ This option causes busybox shells to not execute typical
+ fork/exec/wait sequence, but call <applet>_main directly,
+ if possible. (Sometimes it is not possible: for example,
+ this is not possible in pipes).
+
+ This will be done only for some applets (those which are marked
+ NOFORK in include/applets.h).
+
+ This may significantly speed up some shell scripts.
+
+ This feature is relatively new. Use with care. Report bugs
+ to project mailing list.
+
+config BUSYBOX_CONFIG_FEATURE_SH_HISTFILESIZE
+ bool "Use $HISTFILESIZE"
+ default BUSYBOX_DEFAULT_FEATURE_SH_HISTFILESIZE
+ depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
+ help
+ This option makes busybox shells to use $HISTFILESIZE variable
+ to set shell history size. Note that its max value is capped
+ by "History size" setting in library tuning section.
+
+
+endmenu