我想找到一个Windows批处理对应Bash的$@,它持有传递到脚本的所有参数的列表。

还是要我费心去换班?


当前回答

我发现下次你需要查这些资料的时候。你不需要打开浏览器,只需要输入call /?在你的CMD,你会得到它:

...

%* in a batch script refers to all the arguments (e.g. %1 %2 %3
    %4 %5 ...)

Substitution of batch parameters (%n) has been enhanced.  You can
now use the following optional syntax:

    %~1         - expands %1 removing any surrounding quotes (")
    %~f1        - expands %1 to a fully qualified path name
    %~d1        - expands %1 to a drive letter only
    %~p1        - expands %1 to a path only
    %~n1        - expands %1 to a file name only
    %~x1        - expands %1 to a file extension only
    %~s1        - expanded path contains short names only
    %~a1        - expands %1 to file attributes
    %~t1        - expands %1 to date/time of file
    %~z1        - expands %1 to size of file
    %~$PATH:1   - searches the directories listed in the PATH
                   environment variable and expands %1 to the fully
                   qualified name of the first one found.  If the
                   environment variable name is not defined or the
                   file is not found by the search, then this
                   modifier expands to the empty string

The modifiers can be combined to get compound results:

    %~dp1       - expands %1 to a drive letter and path only
    %~nx1       - expands %1 to a file name and extension only
    %~dp$PATH:1 - searches the directories listed in the PATH
                   environment variable for %1 and expands to the
                   drive letter and path of the first one found.
    %~ftza1     - expands %1 to a DIR like output line

In the above examples %1 and PATH can be replaced by other
valid values.  The %~ syntax is terminated by a valid argument
number.  The %~ modifiers may not be used with %*

其他回答

如果参数在包含空格的引号中,%*将无法正确工作。 我发现的最佳解决方案是使用一个连接所有参数的循环:https://serverfault.com/a/22541

set args=%1
shift
:start
if [%1] == [] goto done
set args=%args% %1
shift
goto start

:done
(use %args% here)

Dancavallaro是正确的,%*用于所有命令行参数(不包括脚本名称本身)。你可能还会发现这些有用:

%0 -用于调用批处理文件的命令(可以是foo, ..\foo, c:\bats\foo.bat等) %1是第一个命令行参数, %2是第二个命令行参数, 等等,直到%9 (SHIFT可以用于9号之后的)。

%~nx0—批处理文件的实际名称,与调用方法无关(some-batch.bat) %~dp0 -脚本的驱动器和路径(d:\scripts) %~dpnx0 -是脚本的完全限定路径名(d:\scripts\some-batch.bat)

更多信息的例子在https://www.ss64.com/nt/syntax-args.html和https://www.robvanderwoude.com/parameters.html

% 1…%n和%*保存参数,但是访问它们可能很棘手,因为内容将被解释。 因此,用普通语句处理这样的事情是不可能的

myBatch.bat "&"^&

每一行都失败,因为cmd.exe试图执行一个&号(%1的内容是“&”&)

set var=%1
set "var=%1"
set var=%~1
set "var=%~1"

但是存在一个临时文件的解决方案

@echo off
SETLOCAL DisableDelayedExpansion

SETLOCAL
for %%a in (1) do (
    set "prompt=$_"
    echo on
    for %%b in (1) do rem * #%1#
    @echo off
) > param.txt
ENDLOCAL

for /F "delims=" %%L in (param.txt) do (
  set "param1=%%L"
)
SETLOCAL EnableDelayedExpansion
set "param1=!param1:*#=!"
set "param1=!param1:~0,-2!"
echo %%1 is '!param1!'

诀窍是在rem语句后启用echo并展开%1(也适用于%2 ..% *)。 但是为了能够重定向echo on的输出,您需要两个for - loop。

额外的字符* #用于安全对抗/?(有助于快速眼动)。 或者行尾的插入符号^可以作为多行字符。

FOR /F应关闭延迟展开,否则包含“!”的内容将被销毁。 在删除param1中的额外字符后,您就得到了它。

要以安全的方式使用param1,请启用延迟扩展。

编辑:一条注释到%0

%0包含用于调用批处理的命令,也像FoO.BaT中一样保留大小写 但是在调用函数%0之后,也在%~0中包含函数名(或者更好的是用于调用函数的字符串)。 但是使用%~f0,您仍然可以找回文件名。

@echo off
echo main %0, %~0, %~f0
call :myLabel+xyz
exit /b

:MYlabel
echo func %0, %~0, %~f0
exit /b

输出

main test.bat, test.bat, C:\temp\test.bat
func :myLabel+xyz, :myLabel+xyz, C:\temp\test.bat

有时我需要提取几个命令行参数,但不是全部,也不是从第一个参数提取。让我们假设下面的调用:

Test.bat uno dos tres cuatro cinco seis siete

当然,扩展名“。bat”是不需要的,至少你在同一个文件夹中有test.exe。我们想要的是得到输出“tres cuatro cinco”(不管是一行还是三行)。我们的目标是只需要三个参数,并从第三个参数开始。为了有一个简单的例子,每个操作都是“echo”,但是你可以考虑其他一些更复杂的操作。

我提供了一些例子,(选项),以便你可以看看你认为哪个更适合你。不幸的是,没有一个好的(或者我不知道)方法基于范围内的for循环,比如“for %% I in(%3, 1, %5)”。

@echo off 
setlocal EnableDelayedExpansion

echo Option 1: one by one (same line)
echo %3, %4, %5
echo.

echo Option 2: Loop For one by one
for %%a in (%3, %4, %5) do echo %%a
echo.

echo Option 3: Loop For with check of limits
set i=0
for %%a in (%*) do (
    set /A i=i+1
    If !i! GTR 2 if !i! LSS 6 echo %%a
)
echo.

echo Option 4: Loop For with auxiliary list
for /l %%i in (3,1,5) do  (
    set a=%%i
    set b=echo %%
    set b=!b!!a!
    call !b!
)
echo.

echo Option 5: Assigning to an array of elements previously
set e[0]=%0
set i=0 
for %%a in (%*) do (
    set /A i=i+1
    set e[!i!]=%%a
)
for  /l %%i in (3,1,5) do (
    echo !e[%%i]!
)
echo.

echo Option 6: using shift and goto loop. It doesn't work with for loop
set i=2
:loop6
    set /A i=i+1
    echo %3
    shift
    If %i% LSS 5 goto :loop6

也许你可以找到更多的选项,或者将几个选项结合起来。享受其中的乐趣。

这里有一个相当简单的方法来获取参数并将它们设置为env vars。在本例中,我将它们称为键和值。

将下面的代码示例保存为“args.bat”。然后调用批处理文件 从命令行保存。 示例:arg.bat——x 90——y 120

我提供了一些echo命令帮助您完成整个过程。但是, 最终结果是——x的值将为90,而——y的值将为120(即如果您运行上面指定的示例;-))。

然后,您可以使用'if defined'条件语句来确定是否运行您的代码块。 让我们运行: bat -x hello-world 然后,我可以使用语句“IF DEFINED—x echo %—x%”,结果将是“hello-world”。如果运行批处理,这应该更有意义。

@setlocal enableextensions enabledelayedexpansion
@ECHO off
ECHO.
ECHO :::::::::::::::::::::::::: arg.bat example :::::::::::::::::::::::::::::::
ECHO :: By:      User2631477, 2013-07-29                                   ::
ECHO :: Version: 1.0                                                         ::
ECHO :: Purpose: Checks the args passed to the batch.                        ::
ECHO ::                                                                      ::
ECHO :: Start by gathering all the args with the %%* in a for loop.          ::
ECHO ::                                                                      ::
ECHO :: Now we use a 'for' loop to search for our keys which are identified  ::
ECHO :: by the text '--'. The function then sets the --arg ^= to the next    ::
ECHO :: arg. "CALL:Function_GetValue" ^<search for --^> ^<each arg^>         ::
ECHO ::                                                                      ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

ECHO.

ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: From the command line you could pass... arg.bat --x 90 --y 220       ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
ECHO.Checking Args:"%*"

FOR %%a IN (%*) do (
    CALL:Function_GetValue "--","%%a" 
)

ECHO.
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: Now lets check which args were set to variables...                   ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO :: For this we are using the CALL:Function_Show_Defined "--x,--y,--z"   ::
ECHO ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
CALL:Function_Show_Defined "--x,--y,--z"
endlocal
goto done

:Function_GetValue

REM First we use find string to locate and search for the text.
echo.%~2 | findstr /C:"%~1" 1>nul

REM Next we check the errorlevel return to see if it contains a key or a value
REM and set the appropriate action.

if not errorlevel 1 (
  SET KEY=%~2
) ELSE (
  SET VALUE=%~2
)
IF DEFINED VALUE (
    SET %KEY%=%~2
    ECHO.
    ECHO ::::::::::::::::::::::::: %~0 ::::::::::::::::::::::::::::::
    ECHO :: The KEY:'%KEY%' is now set to the VALUE:'%VALUE%'                     ::
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO.
    ECHO %KEY%=%~2
    ECHO.
    REM It's important to clear the definitions for the key and value in order to
    REM search for the next key value set.
    SET KEY=
    SET VALUE=
)
GOTO:EOF

:Function_Show_Defined 
ECHO.
ECHO ::::::::::::::::::: %~0 ::::::::::::::::::::::::::::::::
ECHO :: Checks which args were defined i.e. %~2
ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
ECHO.
SET ARGS=%~1
for %%s in (%ARGS%) DO (
    ECHO.
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO :: For the ARG: '%%s'                         
    IF DEFINED %%s (
        ECHO :: Defined as: '%%s=!%%s!'                                             
    ) else (
        ECHO :: Not Defined '%%s' and thus has no value.
    )
    ECHO :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
    ECHO.
)
goto:EOF

:done