批处理文件 - 获取和解析CMD输出字符串

Question

我从来没有写过一个批处理文件，现在我必须编写一个批处理文件来运行命令行并解析其输出。 （例如：CMD：Diskpart的名单量，输出：卷列表和自由空间，我想找到有最大可用空间的体积） 我的问题：

1. 我应该怎么写得到的输出？
2. 我该如何解析它？

感谢你的一切，

Answer 1

DiskPart列表卷不会为您提供可用空间，但我认为这只是一个示例。 该批次将为您的系统提供最大容量的驱动器。 它使用足够的结构，让你用自己的要求去...... 你需要把下列批处理文件

@echo off 
echo **************************************************** 
echo *** Give maximum drive size on a given system **** 
echo **************************************************** 
echo *** This script shows various batch constructs. **** 
echo *** Use at your own risk - no warranty given **** 
echo *** that's fit for any intended purpose :-)) **** 
echo ***  or that it's error free    **** 
echo **************************************************** 
echo. 


REM All of our vars will be local - we do not want to pollute environment. For more info exec 'help setlocal' from cmdline 
REM implied endlocal will be issued at the end, no need to insert it 
setlocal 
REM name of temp file we will use 
set tmpFile=tmp.txt 
REM power will store multiplier we are currently working in 
set power=0 
REM maximum found drive size 
set maxSize=0 

REM Enable delayed expansion - must be on, otherwise all vars will be expanded on input. For more info exec 'help setlocal' from cmdline 
setlocal enabledelayedexpansion 
REM enable extensions (on by default). Please see help setlocal 
setlocal enableextensions 

REM get input from user. For more info exec 'help set' from cmdline 
set /P cmd=Give diskpart command you want to run [list volume] 

REM set default command if user did not set anything 
if NOT DEFINED cmd set cmd=list volume 
REM set file to contain command we want to run 
echo %cmd%>%tmpFile% 
REM Skip 8 first lines, then read each line as token. For more info exec 'help for' from cmdline 
REM use of backquote will enable us to use temp file with spaces in name 
set ERRORLEVEL=0 
for /f "tokens=* skip=8 usebackq" %%i in (`diskpart /s %tmpFile%`) do (
    set line=%%i 
    REM read 5 chars from input token, starting at char 49, convert it to number and assign to env var. For more info exec 'help set' from cmdline 
    REM This also shows delayed expansion convention (!var!). 
    set /A tsize=!line:~49,5!*1 
REM test for unequality (we want to run body only if given size is not 0). For more info exec 'help if' from cmdline 
REM see also other operators used (LSS, GEQ 
    if !tsize! NEQ 0 (
    REM it's not possible to do most obvious (multiplication) as this would overflow. 
    REM '(' is block character. Look how they are positioned, it has to be this way! 
    REM Mind also where you can put spaces! 
    REM 'set a=7' is different to 'set a=7 ' 
     set unit=!line:~54,2! 
     REM Mind use of ' 
     if '!unit!'==' B' (
      if !power! LSS 1 (
      set power=1 
      set maxSize=!tSize! 
      ) 
       if !power!==1 ( 
       if !tsize! GEQ !maxsize! (
        set maxSize=!tsize! 
        set maxUnit=!unit! 
        set maxDrive=!line! 
       ) 
      ) 
      ) 
     if !unit!==KB (
      if !power! LSS 3 (
       set power=3 
       set maxSize=!tSize! 
      ) 
       if !power!==3 ( 
       if !tsize! GEQ !maxsize! (
        set maxSize=!tsize! 
        set maxUnit=!unit! 
        set maxDrive=!line! 
       ) 
      ) 
      ) 
     if !unit!==MB (
      if !power! LSS 6 (
      set power=6 
      set maxSize=!tSize! 
      ) 
       if !power!==6 ( 
       if !tsize! GEQ !maxsize! (
        set maxSize=!tsize! 
        set maxUnit=!unit! 
        set maxDrive=!line! 
       ) 
      ) 
      ) 
     if !unit!==GB (
      if !power! LSS 9 (
      set power=9 
      set maxSize=!tSize! 
      ) 
       if !power!==9 ( 
       if !tsize! GEQ !maxsize! (
        set maxSize=!tsize! 
        set maxUnit=!unit! 
        set maxDrive=!line! 
       )     
      ) 
      ) 
    ) 
) 

REM cleanup 
del %tmpFile% /Q 
REM this prints empty line 
echo. 
echo Your max drive is: !maxSize! !maxUnit! 
echo. 
echo Drive details: 
echo !maxDrive! 

Answer 2

下面是简单的起始位。

echo list volume > %temp%\temp12345 
diskpart /s %temp%\temp12345 > %temp%\diskpart.txt 

批处理是一个噩梦，你有任何其他的选择吗？

编辑：要批量执行，您需要使用FOR。

检查For /?有关如何解析数据的示例。