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-rw-r--r--package/utils/busybox/config/shell/Config.in278
1 files changed, 139 insertions, 139 deletions
diff --git a/package/utils/busybox/config/shell/Config.in b/package/utils/busybox/config/shell/Config.in
index e455d3832d..97b7f1cfc8 100644
--- a/package/utils/busybox/config/shell/Config.in
+++ b/package/utils/busybox/config/shell/Config.in
@@ -11,26 +11,26 @@ choice
prompt "Choose which shell is aliased to 'sh' name"
default BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_SH_IS_ASH
depends on !BUSYBOX_CONFIG_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 BUSYBOX_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 BUSYBOX_CONFIG_SH_IS_NONE
bool "none"
@@ -41,36 +41,36 @@ choice
prompt "Choose which shell is aliased to 'bash' name"
default BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_BASH_IS_ASH
depends on !BUSYBOX_CONFIG_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 BUSYBOX_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 BUSYBOX_CONFIG_BASH_IS_NONE
bool "none"
@@ -83,11 +83,11 @@ config BUSYBOX_CONFIG_ASH
default BUSYBOX_DEFAULT_ASH
depends on !BUSYBOX_CONFIG_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.
+ 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.
# ash options
# note: Don't remove !NOMMU part in the next line; it would break
@@ -104,11 +104,11 @@ config BUSYBOX_CONFIG_ASH_INTERNAL_GLOB
default BUSYBOX_DEFAULT_ASH_INTERNAL_GLOB # Y is bigger, but because of uclibc glob() bug, let Y be default for now
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH
help
- Do not use glob() function from libc, use internal implementation.
- Use this if you are getting "glob.h: No such file or directory"
- or similar build errors.
- Note that as of now (2017-01), uclibc and musl glob() both have bugs
- which would break ash if you select N here.
+ Do not use glob() function from libc, use internal implementation.
+ Use this if you are getting "glob.h: No such file or directory"
+ or similar build errors.
+ Note that as of now (2017-01), uclibc and musl glob() both have bugs
+ which would break ash if you select N here.
config BUSYBOX_CONFIG_ASH_BASH_COMPAT
bool "bash-compatible extensions"
@@ -130,37 +130,37 @@ config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT
default BUSYBOX_DEFAULT_ASH_RANDOM_SUPPORT
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH
help
- Enable pseudorandom generator and dynamic variable "$RANDOM".
- Each read of "$RANDOM" will generate a new pseudorandom value.
- You can reset the generator by using a specified start value.
- After "unset RANDOM" the generator will switch off and this
- variable will no longer have special treatment.
+ Enable pseudorandom generator and dynamic variable "$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 BUSYBOX_CONFIG_ASH_EXPAND_PRMT
bool "Expand prompt string"
default BUSYBOX_DEFAULT_ASH_EXPAND_PRMT
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_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.
+ $PS# may contain volatile content, such as backquote commands.
+ This option recreates the prompt string from the environment
+ variable each time it is displayed.
config BUSYBOX_CONFIG_ASH_IDLE_TIMEOUT
bool "Idle timeout variable $TMOUT"
default BUSYBOX_DEFAULT_ASH_IDLE_TIMEOUT
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH
help
- Enable bash-like auto-logout after $TMOUT seconds of idle time.
+ Enable bash-like auto-logout after $TMOUT seconds of idle time.
config BUSYBOX_CONFIG_ASH_MAIL
bool "Check for new mail in interactive shell"
default BUSYBOX_DEFAULT_ASH_MAIL
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH
help
- Enable "check for new mail" function:
- if set, $MAIL file and $MAILPATH list of files
- are checked for mtime changes, and "you have mail"
- message is printed if change is detected.
+ Enable "check for new mail" function:
+ if set, $MAIL file and $MAILPATH list of files
+ are checked for mtime changes, and "you have mail"
+ message is printed if change is detected.
config BUSYBOX_CONFIG_ASH_ECHO
bool "echo builtin"
@@ -192,67 +192,67 @@ config BUSYBOX_CONFIG_ASH_CMDCMD
default BUSYBOX_DEFAULT_ASH_CMDCMD
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH
help
- Enable support for the 'command' builtin, which allows
- you to run the specified command or builtin,
- even when there is a function with the same name.
+ Enable support for the 'command' builtin, which allows
+ you to run the specified command or builtin,
+ even when there is a function with the same name.
endif # ash options
config BUSYBOX_CONFIG_CTTYHACK
bool "cttyhack"
default BUSYBOX_DEFAULT_CTTYHACK
help
- One common problem reported on the mailing list is the "can't
- access tty; job control turned off" error message, which typically
- appears when one tries to use a shell with stdin/stdout on
- /dev/console.
- This device is special - it cannot be a controlling tty.
+ One common problem reported on the mailing list is the "can't
+ access tty; job control turned off" error message, which typically
+ appears when one tries to use a shell with stdin/stdout on
+ /dev/console.
+ This device is special - it cannot be a controlling tty.
- The proper solution is to use the correct device instead of
- /dev/console.
+ The proper solution is to use the correct device instead of
+ /dev/console.
- cttyhack provides a "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).
- On Linux it also checks sysfs for a pointer to the active console.
- If cttyhack is able to find the real console device, it closes
- stdin/out/err and reopens that device.
- Then it executes the given program. Opening the device will make
- that device a controlling tty. This may require cttyhack
- to be a session leader.
+ cttyhack provides a "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).
+ On Linux it also checks sysfs for a pointer to the active console.
+ If cttyhack is able to find the real console device, it closes
+ stdin/out/err and reopens that device.
+ Then it executes the 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):
+ Example for /etc/inittab (for busybox init):
- ::respawn:/bin/cttyhack /bin/sh
+ ::respawn:/bin/cttyhack /bin/sh
- Starting an interactive shell from boot shell script:
+ Starting an interactive shell from boot shell script:
- setsid cttyhack sh
+ setsid cttyhack sh
- Giving controlling tty to shell running with PID 1:
+ Giving controlling tty to shell running with PID 1:
- # exec cttyhack sh
+ # exec cttyhack sh
- Without cttyhack, you need to know exact tty name,
- and do something like this:
+ Without cttyhack, you need to know exact tty name,
+ and do something like this:
- # exec setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
+ # exec setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
- Starting getty on a controlling tty from a shell script:
+ Starting getty on a controlling tty from a shell script:
- # getty 115200 $(cttyhack)
+ # getty 115200 $(cttyhack)
config BUSYBOX_CONFIG_HUSH
bool "hush"
default BUSYBOX_DEFAULT_HUSH
help
- hush is a small shell (25k). 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.
+ hush is a small shell (25k). 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 will compile and work on no-mmu systems.
- It does not handle select, aliases, tilde expansion,
- &>file and >&file redirection of stdout+stderr.
+ It does not handle select, aliases, tilde expansion,
+ &>file and >&file redirection of stdout+stderr.
config BUSYBOX_CONFIG_HUSH_BASH_COMPAT
bool "bash-compatible extensions"
@@ -264,17 +264,17 @@ config BUSYBOX_CONFIG_HUSH_BRACE_EXPANSION
default BUSYBOX_DEFAULT_HUSH_BRACE_EXPANSION
depends on BUSYBOX_CONFIG_HUSH_BASH_COMPAT
help
- Enable {abc,def} extension.
+ Enable {abc,def} extension.
config BUSYBOX_CONFIG_HUSH_INTERACTIVE
bool "Interactive mode"
default BUSYBOX_DEFAULT_HUSH_INTERACTIVE
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable interactive mode (prompt and command editing).
- Without this, hush simply reads and executes commands
- from stdin just like a shell script from a file.
- No prompt, no PS1/PS2 magic shell variables.
+ Enable interactive mode (prompt and command editing).
+ Without this, hush simply reads and executes commands
+ from stdin just like a shell script from a file.
+ No prompt, no PS1/PS2 magic shell variables.
config BUSYBOX_CONFIG_HUSH_SAVEHISTORY
bool "Save command history to .hush_history"
@@ -286,18 +286,18 @@ config BUSYBOX_CONFIG_HUSH_JOB
default BUSYBOX_DEFAULT_HUSH_JOB
depends on BUSYBOX_CONFIG_HUSH_INTERACTIVE
help
- Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current
- command (not entire shell), fg/bg builtins work. Without this option,
- "cmd &" still works by simply spawning a process and immediately
- prompting for next command (or executing next command in a script),
- but no separate process group is formed.
+ Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current
+ command (not entire shell), fg/bg builtins work. Without this option,
+ "cmd &" still works by simply spawning a process and immediately
+ prompting for next command (or executing next command in a script),
+ but no separate process group is formed.
config BUSYBOX_CONFIG_HUSH_TICK
bool "Support process substitution"
default BUSYBOX_DEFAULT_HUSH_TICK
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable `command` and $(command).
+ Enable `command` and $(command).
config BUSYBOX_CONFIG_HUSH_IF
bool "Support if/then/elif/else/fi"
@@ -314,37 +314,37 @@ config BUSYBOX_CONFIG_HUSH_CASE
default BUSYBOX_DEFAULT_HUSH_CASE
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable case ... esac statement. +400 bytes.
+ Enable case ... esac statement. +400 bytes.
config BUSYBOX_CONFIG_HUSH_FUNCTIONS
bool "Support funcname() { commands; } syntax"
default BUSYBOX_DEFAULT_HUSH_FUNCTIONS
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable support for shell functions. +800 bytes.
+ Enable support for shell functions. +800 bytes.
config BUSYBOX_CONFIG_HUSH_LOCAL
bool "local builtin"
default BUSYBOX_DEFAULT_HUSH_LOCAL
depends on BUSYBOX_CONFIG_HUSH_FUNCTIONS
help
- Enable support for local variables in functions.
+ Enable support for local variables in functions.
config BUSYBOX_CONFIG_HUSH_RANDOM_SUPPORT
bool "Pseudorandom generator and $RANDOM variable"
default BUSYBOX_DEFAULT_HUSH_RANDOM_SUPPORT
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable pseudorandom generator and dynamic variable "$RANDOM".
- Each read of "$RANDOM" will generate a new pseudorandom value.
+ Enable pseudorandom generator and dynamic variable "$RANDOM".
+ Each read of "$RANDOM" will generate a new pseudorandom value.
config BUSYBOX_CONFIG_HUSH_MODE_X
bool "Support 'hush -x' option and 'set -x' command"
default BUSYBOX_DEFAULT_HUSH_MODE_X
depends on BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- This instructs hush to print commands before execution.
- Adds ~300 bytes.
+ This instructs hush to print commands before execution.
+ Adds ~300 bytes.
config BUSYBOX_CONFIG_HUSH_ECHO
bool "echo builtin"
@@ -376,7 +376,7 @@ config BUSYBOX_CONFIG_HUSH_EXPORT_N
default BUSYBOX_DEFAULT_HUSH_EXPORT_N
depends on BUSYBOX_CONFIG_HUSH_EXPORT
help
- export -n unexports variables. It is a bash extension.
+ export -n unexports variables. It is a bash extension.
config BUSYBOX_CONFIG_HUSH_KILL
bool "kill builtin (supports kill %jobspec)"
@@ -433,7 +433,7 @@ config BUSYBOX_CONFIG_MSH
default BUSYBOX_DEFAULT_MSH
select BUSYBOX_CONFIG_HUSH
help
- msh is deprecated and will be removed, please migrate to hush.
+ msh is deprecated and will be removed, please migrate to hush.
comment "Options common to all shells"
@@ -444,71 +444,71 @@ config BUSYBOX_CONFIG_FEATURE_SH_MATH
default BUSYBOX_DEFAULT_FEATURE_SH_MATH
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Enable math support in the shell via $((...)) syntax.
+ Enable math support in the shell via $((...)) syntax.
config BUSYBOX_CONFIG_FEATURE_SH_MATH_64
bool "Extend POSIX math support to 64 bit"
default BUSYBOX_DEFAULT_FEATURE_SH_MATH_64
depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET
bool "Hide message on interactive shell startup"
default BUSYBOX_DEFAULT_FEATURE_SH_EXTRA_QUIET
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_BASH_IS_HUSH
help
- Remove the busybox introduction when starting a shell.
+ Remove the busybox introduction when starting a shell.
config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE
bool "Standalone shell"
default BUSYBOX_DEFAULT_FEATURE_SH_STANDALONE
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_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 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.
+ 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.
+ 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 BUSYBOX_CONFIG_FEATURE_SH_NOFORK
bool "Run 'nofork' applets directly"
default BUSYBOX_DEFAULT_FEATURE_SH_NOFORK
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_FEATURE_SH_HISTFILESIZE
bool "Use $HISTFILESIZE"
default BUSYBOX_DEFAULT_FEATURE_SH_HISTFILESIZE
depends on BUSYBOX_CONFIG_ASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_SH_IS_ASH || BUSYBOX_CONFIG_BASH_IS_ASH || BUSYBOX_CONFIG_SH_IS_HUSH || BUSYBOX_CONFIG_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