choice (阻止批處理文件和腳本運行)

舞夕之發表于 2020-06-29 14:26

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命令行 MSDOS命令 choice

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choice命令允許用戶在進行一系列選擇時阻止批處理文件和腳本運行。具有使用choice命令的批處理文件的Microsoft Windows 2000和Windows XP用戶應修改該批處理文件以使用MS-DOS set命令。

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1 choice 運行系統環境

2 choice 語法

3 choice 示例

choice 運行系統環境

Windows 95

Windows 98

Windows vista

Windows 7

Windows 8

Windows 10

MS-DOS 6.0及更高版本

choice 語法

Windows Vista和更高版本的語法

CHOICE [/C choices] [/N] [/CS] [/T timeout /D choice] [/M text]


/C choices	指定要創建的選項列表。默認列表為“ YN”。
/N	隱藏提示中的選項列表。顯示提示前的消息，并且選項仍處于啟用狀態。
/CS	允許選擇區分大小寫的選項。默認情況下，該實用程序不區分大小寫。
/T timeout	做出默認選擇之前要暫停的秒數。可接受的值是0到9999。如果指定0，則不會暫停，并且選擇了默認選項。
/D choice	在nnnn秒后指定默認選項。字符必須在/ C選項指定的選項集中，并且還必須使用/ T指定nnnn。
/M text	指定在提示之前顯示的消息。如果未指定，則該實用程序僅顯示提示。

注意：

ERRORLEVEL 環境變量設置為從選項集中選擇的鍵的索引。列出的第一個選項返回值1，第二個返回值2，依此類推。如果用戶按下不是有效選項的鍵，該工具會發出警告蜂鳴聲。如果工具檢測到錯誤情況，它將返回255的ERRORLEVEL值。如果用戶按Ctrl + BREAK或Ctrl + C，則該工具將返回ERRORLEVEL值0。在批處理程序中使用ERRORLEVEL參數時，請以降序列出訂購。

例子：

CHOICE /?
CHOICE /C YNC /M "Press Y for Yes, N for No or C for Cancel."
CHOICE /T 10 /C ync /CS /D y
CHOICE /C ab /M "Select a for option 1 and b for option 2."
CHOICE /C ab /N /M "Select a for option 1 and b for option 2."

Windows XP和更早的語法

choice [/C[:]choices] [/N] [/S] [/T[:]c,nn] [text]

選項


/C[:]choices	指定允許的密鑰。默認為是/否。
/ N	不顯示選項和“？” 在提示字符串的末尾。
/S	將選擇鍵區分大小寫。
/ T [：] c，nn	nn秒后默認選擇為c。
text	顯示提示字符串。

Windows Vista and later syntax

CHOICE [/C choices] [/N] [/CS] [/T timeout /D choice] [/M text]

/C choices	Specifies the list of choices to be created. Default list is "YN".
/N	Hides the list of choices in the prompt. The message before the prompt is displayed and the choices are still enabled.
/CS	Enables case-sensitive choices to be selected. By default, the utility is case-insensitive.
/T timeout	The number of seconds to pause before a default choice is made. Acceptable values are from 0 to 9999. If 0 is specified, there will be no pause and the default choice is selected.
/D choice	Specifies the default choice after nnnn seconds. Character must be in the set of choices specified by /C option and must also specify nnnn with /T.
/M text	Specifies the message to show before the prompt. If not specified, the utility displays only a prompt.

NOTE:

The ERRORLEVEL environment variable is set to the index of the key that was selected from the set of choices. The first choice listed returns a value of 1, the second a value of 2, etc. If the user presses a key that is not a valid choice, the tool sounds a warning beep. If tool detects an error condition, it returns an ERRORLEVEL value of 255. If the user presses Ctrl+BREAK or Ctrl+C, the tool returns an ERRORLEVEL value of 0. When you use ERRORLEVEL parameters in a batch program, list them in decreasing order.

Examples:

CHOICE /?
CHOICE /C YNC /M "Press Y for Yes, N for No or C for Cancel."
CHOICE /T 10 /C ync /CS /D y
CHOICE /C ab /M "Select a for option 1 and b for option 2."
CHOICE /C ab /N /M "Select a for option 1 and b for option 2."

Windows XP and earlier syntax

choice [/C[:]choices] [/N] [/S] [/T[:]c,nn] [text]

Options

/C[:]choices	Specifies allowable keys. Default is Y/N.
/N	Do not display choices and "?" at end of prompt string.
/S	Treat choice keys as case-sensitive.
/T[:]c,nn	Default choice to c after nn seconds.
text	Prompt string to display.

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choice 示例

如何使用選擇并在批處理文件中進行設置
如何在批處理文件中使用set
下面是如何使用set命令使批處理文件用戶能夠按1、2或3并執行所按選項的步驟的方法。

@ECHO off
cls
:start
ECHO.
ECHO 1. Print Hello
ECHO 2. Print Bye
ECHO 3. Print Test
set choice=
set /p choice=Type the number to print text.
if not '%choice%'=='' set choice=%choice:~0,1%
if '%choice%'=='1' goto hello
if '%choice%'=='2' goto bye
if '%choice%'=='3' goto test
ECHO "%choice%" is not valid, try again
ECHO.
goto start
:hello
ECHO HELLO
goto end
:bye
ECHO BYE
goto end
:test
ECHO TEST
goto end
:end
pause

在上面的批處理文件中，當用戶輸入數據并使用set / p選擇行按Enter時，將分配％choice％變量。如果輸入1、2或3，則goto轉到相應的標簽并執行回顯，然后轉到批處理文件的末尾。

請參閱我們的set命令頁面以獲取更多信息和選項。

如何在批處理文件中使用選擇
以下是如何使用choice命令提供選項1、2或3并執行所按選項的步驟。

@ECHO OFF
:BEGIN
CLS
CHOICE /N /C:123 /M "PICK A NUMBER (1, 2, or 3)"%1
IF ERRORLEVEL ==3 GOTO THREE
IF ERRORLEVEL ==2 GOTO TWO
IF ERRORLEVEL ==1 GOTO ONE
GOTO END
:THREE
ECHO YOU HAVE PRESSED THREE
GOTO END
:TWO
ECHO YOU HAVE PRESSED TWO
GOTO END
:ONE
ECHO YOU HAVE PRESSED ONE
:END
pause

在上面的批處理文件中，choice具有1、2或3選項。如果按下其中任何一個，它將轉到帶有goto的標簽，并回顯所按下的數字。

How to use choice and set in a batch file

How to use set in a batch file

Below is how you can use the set command to give batch file users the ability to press 1, 2, or 3 and perform the steps for the option pressed.

@ECHO off
cls
:start
ECHO.
ECHO 1. Print Hello
ECHO 2. Print Bye
ECHO 3. Print Test
set choice=
set /p choice=Type the number to print text.
if not '%choice%'=='' set choice=%choice:~0,1%
if '%choice%'=='1' goto hello
if '%choice%'=='2' goto bye
if '%choice%'=='3' goto test
ECHO "%choice%" is not valid, try again
ECHO.
goto start
:hello
ECHO HELLO
goto end
:bye
ECHO BYE
goto end
:test
ECHO TEST
goto end
:end
pause

In the above batch file, the %choice% variable is assigned when the user enters data and presses enter with the set /p choice line. If 1, 2, or 3 is entered, goto goes to the corresponding label and performs the echo and goes to the end of the batch file.

See our set command page for further information and options.

How to use choice in a batch file

Below is how to use the choice command to give options 1, 2, or 3 and perform the steps for the option pressed.

@ECHO OFF
:BEGIN
CLS
CHOICE /N /C:123 /M "PICK A NUMBER (1, 2, or 3)"%1
IF ERRORLEVEL ==3 GOTO THREE
IF ERRORLEVEL ==2 GOTO TWO
IF ERRORLEVEL ==1 GOTO ONE
GOTO END
:THREE
ECHO YOU HAVE PRESSED THREE
GOTO END
:TWO
ECHO YOU HAVE PRESSED TWO
GOTO END
:ONE
ECHO YOU HAVE PRESSED ONE
:END
pause

In the above batch file, choice has the 1, 2, or 3 option. If any of these are pressed, it goes to the label with goto and echoes the number pressed.

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