package/busybox/config/shell/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6 menu "Shells"
   7
   8 choice
   9         prompt "Choose your default shell"
  10         default BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
  11         help
  12           Choose a shell. The ash shell is the most bash compatible
  13           and full featured one.
  14
  15 config BUSYBOX_CONFIG_FEATURE_SH_IS_ASH
  16         select BUSYBOX_CONFIG_ASH
  17         bool "ash"
  18
  19 config BUSYBOX_CONFIG_FEATURE_SH_IS_HUSH
  20         select BUSYBOX_CONFIG_HUSH
  21         bool "hush"
  22
  23 config BUSYBOX_CONFIG_FEATURE_SH_IS_LASH
  24         select BUSYBOX_CONFIG_LASH
  25         bool "lash"
  26
  27 config BUSYBOX_CONFIG_FEATURE_SH_IS_MSH
  28         select BUSYBOX_CONFIG_MSH
  29         bool "msh"
  30
  31 config BUSYBOX_CONFIG_FEATURE_SH_IS_NONE
  32         bool "none"
  33
  34 endchoice
  35
  36 config BUSYBOX_CONFIG_ASH
  37         bool "ash"
  38         default y
  39         select BUSYBOX_CONFIG_TEST
  40         help
  41           Tha 'ash' shell adds about 60k in the default configuration and is
  42           the most complete and most pedantically correct shell included with
  43           busybox.  This shell is actually a derivative of the Debian 'dash'
  44           shell (by Herbert Xu), which was created by porting the 'ash' shell
  45           (written by Kenneth Almquist) from NetBSD.
  46
  47 comment "Ash Shell Options"
  48         depends on BUSYBOX_CONFIG_ASH
  49
  50 config BUSYBOX_CONFIG_ASH_JOB_CONTROL
  51         bool "Job control"
  52         default y
  53         depends on BUSYBOX_CONFIG_ASH
  54         help
  55           Enable job control in the ash shell.
  56
  57 config BUSYBOX_CONFIG_ASH_READ_NCHARS
  58         bool "'read -n N' and 'read -s' support"
  59         default n
  60         depends on BUSYBOX_CONFIG_ASH
  61         help
  62           'read -n N' will return a value after N characters have been read.
  63           'read -s' will read without echoing the user's input.
  64
  65 config BUSYBOX_CONFIG_ASH_READ_TIMEOUT
  66         bool "'read -t S' support."
  67         default y
  68         depends on BUSYBOX_CONFIG_ASH
  69         help
  70           'read -t S' will return a value after S seconds have passed.
  71           This implementation will allow fractional seconds, expressed
  72           as a decimal fraction, e.g. 'read -t 2.5 foo'.
  73
  74 config BUSYBOX_CONFIG_ASH_ALIAS
  75         bool "alias support"
  76         default y
  77         depends on BUSYBOX_CONFIG_ASH
  78         help
  79           Enable alias support in the ash shell.
  80
  81 config BUSYBOX_CONFIG_ASH_MATH_SUPPORT
  82         bool "Posix math support"
  83         default y
  84         depends on BUSYBOX_CONFIG_ASH
  85         help
  86           Enable math support in the ash shell.
  87
  88 config BUSYBOX_CONFIG_ASH_MATH_SUPPORT_64
  89         bool "Extend Posix math support to 64 bit"
  90         default n
  91         depends on BUSYBOX_CONFIG_ASH_MATH_SUPPORT
  92         help
  93           Enable 64-bit math support in the ash shell.  This will make
  94           the shell slightly larger, but will allow computation with very
  95           large numbers.
  96
  97 config BUSYBOX_CONFIG_ASH_GETOPTS
  98         bool "Builtin getopt to parse positional parameters"
  99         default y
 100         depends on BUSYBOX_CONFIG_ASH
 101         help
 102           Enable getopts builtin in the ash shell.
 103
 104 config BUSYBOX_CONFIG_ASH_BUILTIN_ECHO
 105         bool "Builtin version of 'echo'"
 106         default y
 107         select BUSYBOX_CONFIG_ECHO
 108         depends on BUSYBOX_CONFIG_ASH
 109         help
 110           Enable support for echo, built in to ash.
 111
 112 config BUSYBOX_CONFIG_ASH_BUILTIN_TEST
 113         bool "Builtin version of 'test'"
 114         default y
 115         select BUSYBOX_CONFIG_TEST
 116         depends on BUSYBOX_CONFIG_ASH
 117         help
 118           Enable support for test, built in to ash.
 119
 120 config BUSYBOX_CONFIG_ASH_CMDCMD
 121         bool "'command' command to override shell builtins"
 122         default y
 123         depends on BUSYBOX_CONFIG_ASH
 124         help
 125           Enable support for the ash 'command' builtin, which allows
 126           you to run the specified command with the specified arguments,
 127           even when there is an ash builtin command with the same name.
 128
 129 config BUSYBOX_CONFIG_ASH_MAIL
 130         bool "Check for new mail on interactive shells"
 131         default n
 132         depends on BUSYBOX_CONFIG_ASH
 133         help
 134           Enable "check for new mail" in the ash shell.
 135
 136 config BUSYBOX_CONFIG_ASH_OPTIMIZE_FOR_SIZE
 137         bool "Optimize for size instead of speed"
 138         default y
 139         depends on BUSYBOX_CONFIG_ASH
 140         help
 141           Compile ash for reduced size at the price of speed.
 142
 143 config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT
 144         bool "Pseudorandom generator and variable $RANDOM"
 145         default n
 146         depends on BUSYBOX_CONFIG_ASH
 147         help
 148           Enable pseudorandom generator and dynamic variable "$RANDOM".
 149           Each read of "$RANDOM" will generate a new pseudorandom value.
 150           You can reset the generator by using a specified start value.
 151           After "unset RANDOM" then generator will switch off and this
 152           variable will no longer have special treatment.
 153
 154 config BUSYBOX_CONFIG_ASH_EXPAND_PRMT
 155         bool "Expand prompt string"
 156         default n
 157         depends on BUSYBOX_CONFIG_ASH
 158         help
 159           "PS#" may be contain volatile content, such as backquote commands.
 160           This option recreates the prompt string from the environment
 161           variable each time it is displayed.
 162
 163 config BUSYBOX_CONFIG_HUSH
 164         bool "hush"
 165         default n
 166         select BUSYBOX_CONFIG_TRUE
 167         select BUSYBOX_CONFIG_FALSE
 168         select BUSYBOX_CONFIG_TEST
 169         help
 170           hush is a very small shell (just 18k) and it has fairly complete
 171           Bourne shell grammar.  It even handles all the normal flow control
 172           options such as if/then/elif/else/fi, for/in/do/done, while loops,
 173           etc.
 174
 175           It does not handle case/esac, select, function, here documents ( <<
 176           word ), arithmetic expansion, aliases, brace expansion, tilde
 177           expansion, &> and >& redirection of stdout+stderr, etc.
 178
 179
 180 config BUSYBOX_CONFIG_LASH
 181         bool "lash"
 182         default n
 183         select BUSYBOX_CONFIG_TRUE
 184         select BUSYBOX_CONFIG_FALSE
 185         select BUSYBOX_CONFIG_TEST
 186         help
 187           lash is the very smallest shell (adds just 10k) and it is quite
 188           usable as a command prompt, but it is not suitable for any but the
 189           most trivial scripting (such as an initrd that calls insmod a few
 190           times) since it does not understand any Bourne shell grammar.  It
 191           does handle pipes, redirects, and job control though.  Adding in
 192           command editing makes it a very nice lightweight command prompt.
 193
 194
 195 config BUSYBOX_CONFIG_MSH
 196         bool "msh"
 197         default n
 198         select BUSYBOX_CONFIG_TRUE
 199         select BUSYBOX_CONFIG_FALSE
 200         select BUSYBOX_CONFIG_TEST
 201         help
 202           The minix shell (adds just 30k) is quite complete and handles things
 203           like for/do/done, case/esac and all the things you expect a Bourne
 204           shell to do.  It is not always pedantically correct about Bourne
 205           shell grammar (try running the shell testscript "tests/sh.testcases"
 206           on it and compare vs bash) but for most things it works quite well.
 207           It also uses only vfork, so it can be used on uClinux systems.
 208
 209 comment "Bourne Shell Options"
 210         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 211
 212 config BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET
 213         bool "Hide message on interactive shell startup"
 214         default n
 215         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 216         help
 217           Remove the busybox introduction when starting a shell.
 218
 219 config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE_SHELL
 220         bool "Standalone shell"
 221         default n
 222         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 223         help
 224           This option causes the selected busybox shell to use busybox applets
 225           in preference to executables in the PATH whenever possible.  For
 226           example, entering the command 'ifconfig' into the shell would cause
 227           busybox to use the ifconfig busybox applet.  Specifying the fully
 228           qualified executable name, such as '/sbin/ifconfig' will still
 229           execute the /sbin/ifconfig executable on the filesystem.  This option
 230           is generally used when creating a statically linked version of busybox
 231           for use as a rescue shell, in the event that you screw up your system.
 232
 233           Note that this will *also* cause applets to take precedence
 234           over shell builtins of the same name.  So turning this on will
 235           eliminate any performance gained by turning on the builtin "echo"
 236           and "test" commands in ash.
 237
 238           Note that when using this option, the shell will attempt to directly
 239           run '/bin/busybox'.  If you do not have the busybox binary sitting in
 240           that exact location with that exact name, this option will not work at
 241           all.
 242
 243 config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 244         bool "Command line editing"
 245         default y
 246         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 247         help
 248           Enable command editing in shell.
 249
 250 config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING_VI
 251         bool "vi-style line editing commands"
 252         default n
 253         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 254         help
 255           Enable vi-style line editing in the shell.  This mode can be
 256           turned on and off with "set -o vi" and "set +o vi".
 257
 258 config BUSYBOX_CONFIG_FEATURE_COMMAND_HISTORY
 259         int "History size"
 260         range 0 99999
 261         default 15
 262         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 263         help
 264           Specify command history size in shell.
 265
 266 config BUSYBOX_CONFIG_FEATURE_COMMAND_SAVEHISTORY
 267         bool "History saving"
 268         default n
 269         depends on BUSYBOX_CONFIG_ASH && BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 270         help
 271           Enable history saving in ash shell.
 272
 273 config BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
 274         bool "Tab completion"
 275         default y
 276         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 277         help
 278           Enable tab completion in shell.
 279
 280 config BUSYBOX_CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
 281         bool "Username completion"
 282         default n
 283         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
 284         help
 285           Enable username completion in shell.
 286
 287 config BUSYBOX_CONFIG_FEATURE_SH_FANCY_PROMPT
 288         bool "Fancy shell prompts"
 289         default y
 290         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 291         help
 292           Setting this option allows for prompts to use things like \w and
 293           \$ and also using escape codes.
 294
 295 endmenu