INSERT
-config ASH
- bool "ash"
- default y
- depends on !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 ASH_BASH_COMPAT
- bool "bash-compatible extensions"
- default y
- depends on ASH
- help
- Enable bash-compatible extensions.
-
-config ASH_JOB_CONTROL
- bool "Job control"
- default y
- depends on ASH
- help
- Enable job control in the ash shell.
-
-config ASH_ALIAS
- bool "alias support"
- default y
- depends on ASH
- help
- Enable alias support in the ash shell.
-
-config ASH_GETOPTS
- bool "Builtin getopt to parse positional parameters"
- default y
- depends on ASH
- help
- Enable getopts builtin in the ash shell.
-
-config ASH_BUILTIN_ECHO
- bool "Builtin version of 'echo'"
- default y
- depends on ASH
- help
- Enable support for echo, builtin to ash.
-
-config ASH_BUILTIN_PRINTF
- bool "Builtin version of 'printf'"
- default y
- depends on ASH
- help
- Enable support for printf, builtin to ash.
-
-config ASH_BUILTIN_TEST
- bool "Builtin version of 'test'"
- default y
- depends on ASH
- help
- Enable support for test, builtin to ash.
-
-config ASH_CMDCMD
- bool "'command' command to override shell builtins"
- default y
- 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 ASH_MAIL
- bool "Check for new mail on interactive shells"
- default n
- depends on ASH
- help
- Enable "check for new mail" in the ash shell.
-
-config ASH_OPTIMIZE_FOR_SIZE
- bool "Optimize for size instead of speed"
- default y
- depends on ASH
- help
- Compile ash for reduced size at the price of speed.
-
-config ASH_RANDOM_SUPPORT
- bool "Pseudorandom generator and $RANDOM variable"
- default y
- depends on ASH
- help
- Enable pseudorandom generator and dynamic variable "$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" the generator will switch off and this
- variable will no longer have special treatment.
-
-config ASH_EXPAND_PRMT
- bool "Expand prompt string"
- default y
- depends on 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.
-
choice
prompt "Choose which shell is aliased to 'sh' name"
endchoice
-config LASH
- bool "lash (deprecated: aliased to hush)"
- default n
- select HUSH
- help
- lash is deprecated and will be removed, please migrate to hush.
-
-config MSH
- bool "msh (deprecated: please use hush)"
- default n
- select HUSH
- help
- msh is deprecated and will be removed, please migrate to hush.
- If there is a feature msh has but hush does not, please let us know.
-
-# 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 uses only vfork, so it can be used on uClinux systems.
-
-
config SH_MATH_SUPPORT
bool "POSIX math support"
default y
This feature is relatively new. Use with care.
-config CTTYHACK
- bool "cttyhack"
- default y
- help
- One common problem reported on the mailing list is "can't access tty;
- job control turned off" error message which typically appears when
- one tries to use shell with stdin/stdout opened to /dev/console.
- This device is special - it cannot be a controlling tty.
-
- Proper solution is to use correct device instead of /dev/console.
-
- cttyhack provides "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).
- If it detects one, it closes stdin/out/err and reopens that device.
- Then it executes 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
-
- Giving controlling tty to shell running with PID 1:
-
- $ exec cttyhack sh
-
- Starting an interactive shell from boot shell script:
-
- setsid cttyhack sh
-
endmenu
projects / oweals / busybox.git / blobdiff