prompt "Choose which shell is aliased to 'sh' name"
default 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.
+ 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 SH_IS_ASH
depends on !NOMMU
bool "ash"
help
- Choose ash to be the shell executed by 'sh' name.
- The ash code will be built into busybox. If you don't select
- "ash" choice (CONFIG_ASH), this shell may only be invoked by
- the name 'sh' (and not 'ash').
+ Choose ash to be the shell executed by 'sh' name.
+ The ash code will be built into busybox. If you don't select
+ "ash" choice (CONFIG_ASH), this shell may only be invoked by
+ the name 'sh' (and not 'ash').
config SH_IS_HUSH
bool "hush"
help
- Choose hush to be the shell executed by 'sh' name.
- The hush code will be built into busybox. If you don't select
- "hush" choice (CONFIG_HUSH), this shell may only be invoked by
- the name 'sh' (and not 'hush').
+ Choose hush to be the shell executed by 'sh' name.
+ The hush code will be built into busybox. If you don't select
+ "hush" choice (CONFIG_HUSH), this shell may only be invoked by
+ the name 'sh' (and not 'hush').
config SH_IS_NONE
bool "none"
prompt "Choose which shell is aliased to 'bash' name"
default 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,
- although compatibility is far from being complete.
+ Choose which shell you want to be executed by 'bash' alias.
+ The ash shell is the most bash compatible and full featured one,
+ although compatibility is far from being complete.
- 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.
+ 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.
+ 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 BASH_IS_ASH
depends on !NOMMU
bool "ash"
help
- Choose ash to be the shell executed by 'bash' name.
- The ash code will be built into busybox. If you don't select
- "ash" choice (CONFIG_ASH), this shell may only be invoked by
- the name 'bash' (and not 'ash').
+ Choose ash to be the shell executed by 'bash' name.
+ The ash code will be built into busybox. If you don't select
+ "ash" choice (CONFIG_ASH), this shell may only be invoked by
+ the name 'bash' (and not 'ash').
config BASH_IS_HUSH
bool "hush"
help
- Choose hush to be the shell executed by 'bash' name.
- The hush code will be built into busybox. If you don't select
- "hush" choice (CONFIG_HUSH), this shell may only be invoked by
- the name 'bash' (and not 'hush').
+ Choose hush to be the shell executed by 'bash' name.
+ The hush code will be built into busybox. If you don't select
+ "hush" choice (CONFIG_HUSH), this shell may only be invoked by
+ the name 'bash' (and not 'hush').
config BASH_IS_NONE
bool "none"
default y
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
- Enable math support in the shell via $((...)) syntax.
+ Enable math support in the shell via $((...)) syntax.
config FEATURE_SH_MATH_64
bool "Extend POSIX math support to 64 bit"
default y
depends on FEATURE_SH_MATH
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.
+ 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 FEATURE_SH_EXTRA_QUIET
bool "Hide message on interactive shell startup"
default y
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
- Remove the busybox introduction when starting a shell.
+ Remove the busybox introduction when starting a shell.
config FEATURE_SH_STANDALONE
bool "Standalone shell"
default n
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
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.
-
- However, there are drawbacks: it is problematic in chroot jails without
- mounted /proc, and ps/top may show command name as 'exe' for applets
- started this way.
+ 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.
+
+ However, there are drawbacks: it is problematic in chroot jails
+ without mounted /proc, and ps/top may show command name as 'exe'
+ for applets started this way.
config FEATURE_SH_NOFORK
bool "Run 'nofork' applets directly"
default n
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
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 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 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 may significantly speed up some shell scripts.
- This feature is relatively new. Use with care. Report bugs
- to project mailing list.
+ This feature is relatively new. Use with care. Report bugs
+ to project mailing list.
+
+config FEATURE_SH_READ_FRAC
+ bool "read -t N.NNN support (+110 bytes)"
+ default y
+ depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
+ help
+ Enable support for fractional second timeout in read builtin.
config FEATURE_SH_HISTFILESIZE
bool "Use $HISTFILESIZE"
default y
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
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.
+ 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.
endif # Options common to all shells
projects / oweals / busybox.git / blobdiff