shell (by Herbert Xu), which was created by porting the 'ash' shell
(written by Kenneth Almquist) from NetBSD.
-comment "Ash Shell Options"
- depends on ASH
-
config ASH_BASH_COMPAT
bool "bash-compatible extensions"
default y
bool "hush"
default n
help
- 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,
- case/esac.
+ hush is a small shell (22k). 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, functions, here documents ( <<
- word ), aliases, brace expansion, tilde expansion,
- &> and >& redirection of stdout+stderr, etc.
+ It does not handle select, aliases, brace expansion,
+ tilde expansion, &>file and >&file redirection of stdout+stderr.
+
+config HUSH_BASH_COMPAT
+ bool "bash-compatible extensions"
+ default y
+ depends on HUSH
+ help
+ Enable bash-compatible extensions.
config HUSH_HELP
bool "help builtin"
help
Enable case ... esac statement in hush. +400 bytes.
+config HUSH_FUNCTIONS
+ bool "Support funcname() { commands; } syntax"
+ default n
+ depends on HUSH
+ help
+ Enable support for shell functions in hush. +800 bytes.
+
+config HUSH_LOCAL
+ bool "Support local builtin"
+ default n
+ depends on HUSH_FUNCTIONS
+ help
+ Enable support for local variables in functions.
+
+config HUSH_EXPORT_N
+ bool "Support export '-n' option"
+ default n
+ depends on HUSH
+ help
+ Enable support for export '-n' option in hush. It is a bash extension.
+
config LASH
bool "lash (deprecated: aliased to hush)"
default n
bool "msh (deprecated: please use hush)"
default n
help
- 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.
-
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.
-comment "Bourne Shell Options"
- depends on MSH || LASH || HUSH || ASH
+# 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"