［综合类］－dos命令cmd帮助信息查询器

@echo off&color 1f&setlocal enabledelayedexpansion
:begin
cls&set "n=0"
for /f "skip=1" %%i in ('help^|findstr /i "[a-z]"') do (
    set /a n+=1&set "_!n!=%%i"
    set /a m=!n!%%5
    if !n! neq 1 if !m! equ 1 echo.
    if !n! lss 10 (
       set "str= !n! %%i      "
       ) else (
       set "str=!n! %%i      "
    )
    set /p=!str:~,10!     <nul
)
set "select="&echo.&echo.&set /p select=请选择要读取帮助的命令序号:
echo %select%|findstr "[^0-9]">nul&&goto wrong
if %select% lss 1 goto wrong
if %select% gtr 71 goto wrong
set "str=!_%select%!"
cls&%str% /?|more
set "choice="&echo.&set /p choice=是否继续读取其他命令帮助信息(y/n):
if /i "%choice%" equ "y" (goto begin) else (goto :eof)
:wrong
echo.&echo 错误，无选择或选择不正确&ping /n 2 127.1>nul&goto begin
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