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[其他] EditV32 - 输入显示为星号 (*)
==========================
http://bcn.bathome.net/s/tool/index.html?key=EditV32
http://www.westmesatech.com/editv.html
==========================- @echo off
- EditV32.exe -m -p "输入密码: " pass
- echo 你输入的密码是: %pass%
- pause
EditVar/EditV32/EditV64 2.2
(C) 2006-2010 by Bill Stewart ([email]bstewart@iname.com[/email])
Description:
EditVar/EditV32/EditV64 is intended for use in shell scripts (aka batch files).
It provides the ability to interactively edit an environment variable's value.
It is provided in three versions:
* EDITVAR.EXE - real-mode MS-DOS version; works in MS-DOS and in Windows
9x/Me COMMAND.COM sessions
* EditV32.exe - Windows x86 (32-bit) console program; requires Windows NT 4.0
or later; does not work on Windows 9x/Me
* EditV64.exe - Windows x64 (64-bit) console program
In this documentation, EditVar refers to any version of the program.
EditVar works by obtaining the an environment variable's value (if it exists)
and presents it on the screen for editing. If you make changes to the variable,
EditVar writes the variable back to the environment.
MS-DOS The MS-DOS version locates the current program's parent environment
(i.e., the environment block of the program that called it), and
sets the variable in the parent environment. This procedure is
specific to MS-DOS and does not work in Windows NT 4.0 or later.
Windows The Windows x86 and x64 versions obtain the process id of the
x86/x64 parent process (i.e., the program that started EditV32.exe or
EditV64.exe), and they use Windows API calls to set the variable in
the environment for the parent process. Note that the x86 version
(EditV32.exe) will not work on Windows 9x/Me because the Win32 API
calls it uses do not exist on Win9x/Me, so it will not execute in
that environment. EditV32.exe requires Windows NT 4.0 or later.
Note that this behavior is markedly different from most other
Windows environment modification tools. Most other tools make
changes to the registry entries that the command shell (usually
Cmd.exe) reads when it starts. With most of these other tools, if
you make changes to the registry, the current Cmd.exe session won't
see them, even if the tool broadcasts the change to Windows.
EditV32.exe and EditV64.exe don't work this way; they can add
variables to the Cmd.exe session that started it, as if you used
the Set command at the prompt.
Cmd.exe in Windows 2000 and later provides the Set /p command to allow user
input into an environment variable, but EditVar provides a richer set of
features:
* It allows you to edit a variable, not just set one.
* It can limit the length of the typed variable.
* It can provide masked input for simple password security.
* It can limit typed input to numbers only.
* It offers a timeout feature.
* It can "escape" reserved shell characters in variables it creates (see
below for more information).
* It provides several useful exit codes.
* The real mode MS-DOS version can be used on MS-DOS bootable media.
For these reasons, EditVar may be preferable to Set /p except in environments
where third-party executables are prohibited.
Usage:
EditVar [-b] [-e] [-l len] [-m] [-n] [-o] [-p prompt] [-t n] [-u] var
Arguments:
-b Place the cursor at the beginning of the input line (instead of the
end).
-e Do not insert shell escape characters before reserved shell
characters in the environment variable's contents. (Windows x86/x64
only)
-l len Limits input to 'len' characters. In MS-DOS, the limit is 255
characters; In Windows x86/x64, the limit is 2047 characters.
-m Masked input: Displays '*' for typed characters.
-n Restricts input to numbers only (0-9).
-o Starts the line editor in overtype mode instead of insert mode.
-p prompt Specifies a prompt for the user. If it contains spaces or tabs,
enclose it in quotes (").
-t n Assume Enter was pressed if nothing typed within 'n' seconds.
-u Forces entered characters to uppercase.
var The environment variable's name (required). This name can be up to
127 characters long. If the variable name contains spaces, enclose
it in quotes.
Note that EditVar has only one required command-line argument: The name of the
environment variable you want to edit. All other arguments are optional.
Note: You must place the environment variable name last on the command line
after all other arguments. All other arguments may appear in any order.
If the /? argument is present and is first on the command line, the program
will display a short usage message.
Exit Codes:
1 The command line contains an error
2 Nothing was typed on the input line
3 The environment variable's contents was not changed
4 The user pressed Ctrl-C to abort input
8 Insufficient space in environment to store variable (MS-DOS only)
126 Wrong operating system version or platform
Notes:
* The Line Editor
The Line editor uses the following keyboard commands:
Keystroke Effect
---------------------------------------------------------------------------
Home Beginning of input line
End End of input line
Left Arrow Left one character
Right Arrow Right one character
Ctrl-Left Arrow Left one word
Ctrl-Right Arrow Right one word
Ctrl-Home Delete from cursor position to beginning of input line
Ctrl-End Delete from cursor position to the end of input line
Esc Delete the entire input line
Ctrl-U or Ctrl-Z Undo (restore the line's original contents)
Insert Toggle insert mode
Backspace Delete character to left of cursor
Delete Delete current character
Ctrl-C Abort input
There is no visual indication of insert or overtype mode. The line editor
defaults to insert mode unless the -o argument exists on the command line.
* MS-DOS Version Notes
* You can use the MS-DOS version on Windows 9x/Me. It also works in
real mode DOS (for example, a DOS diskette).
* The MS-DOS version does not work (and won't run) on Windows NT 4.0 or
later.
* You can't use any of the following characters in an environment
variable: < > |
* An environment variable's contents can be up to 255 characters long.
* If there is not enough space in the environment block to store the
variable, EditVar.exe will return an exit code of 8.
* Windows x86 (32-bit) Version Notes
* The Windows x86 (32-bit) version does not work (and won't run) on
Windows 9x/Me. Windows NT 4.0 or later is required.
* The Windows x86 version (EditV32.exe) runs, but does not work, in x64
versions of Windows; it will not set the environment variable. You must
use EditV64.exe in x64 versions of Windows. You can check the value of
the PROCESSOR_ARCHITECTURE environment variable to decide which version
of EditVar you need.
* Windows x86/x64 Version Notes
* The Windows x86 and x64 versions "escape" reserved shell characters in
the variable they write to the environment. The following characters
are reserved shell characters:
( ) < > ^ & |
If any of these characters exist in the variable, EditVar will insert
the shell escape character (^) before each reserved character. The
variable will be truncated, if necessary, to accommodate the inserted
escape character(s).
Note that if you limit input to one character (-l 1) and you type a
single reserved shell character, EditVar will not save it to the
environment and will instead return an exit code of 2.
You can bypass this behavior with the -e argument.
* If EditVar fails to set the environment variable in the target process,
it will display the Windows error message for the last Windows error it
encountered, and its exit code will equal the last Windows error.
Examples:
1. editv32 -p "Enter your user name: " NAME
EditVar will display the following prompt:
Enter your user name:
It will then place the contents of the NAME variable on the input line for
editing.
2. editv32 -b -l 1 -o -p "Are you sure? " -u YN
If the variable YN exists, it will appear after the following prompt:
Are you sure?
EditVar will place the cursor at the beginning of the input (-b), limit
input to 1 character (-l 1), and input will be forced to uppercase (-u). In
addition, the line editor will start in overtype mode (-o). |
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发表于 2011-7-3 10:41
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发表于 2022-5-9 18:48
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