Question

我正在制作一个需要运行用户输入的命令的程序。如果该命令不存在，则会打开错误。

:cmd
set /p cmd="Command:"
if not exist %cmd% goto nocommand
%cmd%

:noCommand
echo Error, command doesn't exist..
goto cmd

但如果我输入＃34; echo text＆＃34;它说文字不是一个命令。我需要它只读第一个单词。

Answer 1

检查是否可以从给定路径或％PATH％执行命令作为内部命令。它还使用了来自dbenham的解决方案：Check if command is internal in CMD

@echo off
:cmd
set /p "cmd=Command:"
        for /f "tokens=1 delims= " %%a in ("%cmd%") do set "fcmd=%%~na"

        setlocal
        set "empty=%temp%\empty%random%"
        md "%empty%"
        pushd "%empty%"
        set path=
        >nul 2>nul %fcmd% /?
        if not errorlevel 9009 (
            popd
            rd "%empty%"
            echo %fcmd% is internal command
            endlocal
            goto :execute
        ) else (
            popd
            rd "%empty%"
            endlocal
        )

color


for %%# in (%PATHEXT%;"" ) do (
    rem echo --%fcmd%%%~#--
    if exist %fcmd%%%~# (
        echo the command/executable/script will be executed from given location
        goto :execute
    )

    for /f  "tokens=1 delims= " %%a in ("%fcmd%%%~#") do (

        if "%%~$PATH:a" NEQ "" (
            echo the command/executable/script is defined in %%PATH%%
            rem
            goto :execute
        )
    )

)

echo command does not exist
exit /b 1

:execute

%cmd%

Answer 2

set /p cmd="Command:"
for /f "tokens=1" %%i in ("%cmd%") do set firstword=%%i
echo %firstword%

只使用输入批处理文件的第一个单词

2 个答案: