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 "  Enable 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 "  Enable '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 "  Enable '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 "  Enable 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 "  Enable 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 "  Enable getopts builtin 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_CMDCMD
 105         bool "  Enable cmdcmd to override shell builtins"
 106         default y
 107         depends on BUSYBOX_CONFIG_ASH
 108         help
 109           Enable support for the ash 'command' builtin, which allows
 110           you to run the specified command with the specified arguments,
 111           even when there is an ash builtin command with the same name.
 112
 113 config BUSYBOX_CONFIG_ASH_BUILTIN_ECHO
 114         bool "  Enable builtin version of 'echo'"
 115         default y
 116         depends on BUSYBOX_CONFIG_ASH
 117         help
 118           Enable support for echo, built in to ash.
 119
 120 # this entry also appears in coreutils/Config.in, next to the echo applet
 121 config BUSYBOX_CONFIG_FEATURE_FANCY_ECHO
 122         bool "  Enable echo options (-n and -e)"
 123         default y
 124         depends on BUSYBOX_CONFIG_ASH_BUILTIN_ECHO
 125         help
 126           This adds options (-n and -e) to echo.
 127
 128 config BUSYBOX_CONFIG_ASH_MAIL
 129         bool "  Check for new mail on interactive shells"
 130         default n
 131         depends on BUSYBOX_CONFIG_ASH
 132         help
 133           Enable "check for new mail" in the ash shell.
 134
 135 config BUSYBOX_CONFIG_ASH_OPTIMIZE_FOR_SIZE
 136         bool "  Optimize for size instead of speed"
 137         default y
 138         depends on BUSYBOX_CONFIG_ASH
 139         help
 140           Compile ash for reduced size at the price of speed.
 141
 142 config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT
 143         bool "  Enable pseudorandom generator and variable $RANDOM"
 144         default n
 145         depends on BUSYBOX_CONFIG_ASH
 146         help
 147           Enable pseudorandom generator and dynamic variable "$RANDOM".
 148           Each read of "$RANDOM" will generate a new pseudorandom value.
 149           You can reset the generator by using a specified start value.
 150           After "unset RANDOM" then generator will switch off and this
 151           variable will no longer have special treatment.
 152
 153 config BUSYBOX_CONFIG_ASH_EXPAND_PRMT
 154         bool "  Expand prompt string"
 155         default n
 156         depends on BUSYBOX_CONFIG_ASH
 157         help
 158           "PS#" may be contain volatile content, such as backquote commands.
 159           This option recreates the prompt string from the environment
 160           variable each time it is displayed.
 161
 162 config BUSYBOX_CONFIG_HUSH
 163         bool "hush"
 164         default n
 165         select BUSYBOX_CONFIG_TRUE
 166         select BUSYBOX_CONFIG_FALSE
 167         select BUSYBOX_CONFIG_TEST
 168         help
 169           hush is a very small shell (just 18k) and it has fairly complete
 170           Bourne shell grammar.  It even handles all the normal flow control
 171           options such as if/then/elif/else/fi, for/in/do/done, while loops,
 172           etc.
 173
 174           It does not handle case/esac, select, function, here documents ( <<
 175           word ), arithmetic expansion, aliases, brace expansion, tilde
 176           expansion, &> and >& redirection of stdout+stderr, etc.
 177
 178
 179 config BUSYBOX_CONFIG_LASH
 180         bool "lash"
 181         default n
 182         select BUSYBOX_CONFIG_TRUE
 183         select BUSYBOX_CONFIG_FALSE
 184         select BUSYBOX_CONFIG_TEST
 185         help
 186           lash is the very smallest shell (adds just 10k) and it is quite
 187           usable as a command prompt, but it is not suitable for any but the
 188           most trivial scripting (such as an initrd that calls insmod a few
 189           times) since it does not understand any Bourne shell grammar.  It
 190           does handle pipes, redirects, and job control though.  Adding in
 191           command editing makes it a very nice lightweight command prompt.
 192
 193
 194 config BUSYBOX_CONFIG_MSH
 195         bool "msh"
 196         default n
 197         select BUSYBOX_CONFIG_TRUE
 198         select BUSYBOX_CONFIG_FALSE
 199         select BUSYBOX_CONFIG_TEST
 200         help
 201           The minix shell (adds just 30k) is quite complete and handles things
 202           like for/do/done, case/esac and all the things you expect a Bourne
 203           shell to do.  It is not always pedantically correct about Bourne
 204           shell grammar (try running the shell testscript "tests/sh.testcases"
 205           on it and compare vs bash) but for most things it works quite well.
 206           It also uses only vfork, so it can be used on uClinux systems.
 207
 208 comment "Bourne Shell Options"
 209         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 210
 211 config BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET
 212         bool "Hide message on interactive shell startup"
 213         default n
 214         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 215         help
 216           Remove the busybox introduction when starting a shell.
 217
 218 config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE_SHELL
 219         bool "Standalone shell"
 220         default n
 221         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 222         help
 223           This option causes the selected busybox shell to use busybox applets
 224           in preference to executables in the PATH whenever possible.  For
 225           example, entering the command 'ifconfig' into the shell would cause
 226           busybox to use the ifconfig busybox applet.  Specifying the fully
 227           qualified executable name, such as '/sbin/ifconfig' will still
 228           execute the /sbin/ifconfig executable on the filesystem.  This option
 229           is generally used when creating a statically linked version of busybox
 230           for use as a rescue shell, in the event that you screw up your system.
 231
 232           Note that when using this option, the shell will attempt to directly
 233           run '/bin/busybox'.  If you do not have the busybox binary sitting in
 234           that exact location with that exact name, this option will not work at
 235           all.
 236
 237 config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 238         bool "command line editing"
 239         default y
 240         depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH
 241         help
 242           Enable command editing in shell.
 243
 244 config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING_VI
 245         bool "vi-style line editing commands"
 246         default n
 247         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 248         help
 249           Enable vi-style line editing in the shell.  This mode can be
 250           turned on and off with "set -o vi" and "set +o vi".
 251
 252 config BUSYBOX_CONFIG_FEATURE_COMMAND_HISTORY
 253         int "history size"
 254         default 15
 255         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 256         help
 257           Specify command history size in shell.
 258
 259 config BUSYBOX_CONFIG_FEATURE_COMMAND_SAVEHISTORY
 260         bool "history saving"
 261         default n
 262         depends on BUSYBOX_CONFIG_ASH && BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 263         help
 264           Enable history saving in ash shell.
 265
 266 config BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
 267         bool "tab completion"
 268         default y
 269         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 270         help
 271           Enable tab completion in shell.
 272
 273 config BUSYBOX_CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
 274         bool "username completion"
 275         default n
 276         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION
 277         help
 278           Enable username completion in shell.
 279
 280 config BUSYBOX_CONFIG_FEATURE_SH_FANCY_PROMPT
 281         bool "Fancy shell prompts"
 282         default y
 283         depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING
 284         help
 285           Setting this option allows for prompts to use things like \w and
 286           \$ and also using escape codes.
 287
 288 endmenu