FOR命令!虽然我讨厌写批处理文件，但我很感激它。

FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k

将解析myfile.txt中的每一行，忽略以分号开头的行，将每行的第2和第3个标记传递给for主体，标记由逗号和/或空格分隔。 注意for语句引用%i获取第二个令牌，引用%j获取第三个令牌，引用%k获取第三个令牌之后的所有剩余令牌。

你也可以用它来遍历目录、目录内容等等…

删除周围的报价。

for /f "useback tokens=*" %%a in ('%str%') do set str=%%~a

我最近必须写一个批处理文件，由VS预构建事件调用，我想在项目目录中作为参数传递。在批处理文件中，我需要将路径与嵌套子文件夹名称连接起来，但首先需要删除周围的引号。

IF命令!没有它，我的批处理文件是垃圾!

@echo off
IF exist %windir%\system32\iexplore.exe goto end

echo Hmm... it seems you do not have Internet Explorer.
echo Great! You seem to understand ;)

:end
echo Hmm... You have Internet Explorer.
echo That is bad :)

抽取随机的文本行

@echo off

:: Get time (alas, it's only HH:MM xM

for /f %%a in ('time /t') do set zD1=%%a



:: Get last digit of MM

set zD2=%zD1:~4,1%



:: Seed the randomizer, if needed

if not defined zNUM1 set /a zNUM1=%zD2%


:: Get a kinda random number

set /a zNUM1=zNUM1 * 214013 + 2531011

set /a zNUM2=zNUM1 ^>^> 16 ^& 0x7fff


:: Pull off the first digit

:: (Last digit would be better, but it's late, and I'm tired)

set zIDX=%zNUM2:~0,1%


:: Map it down to 0-3

set /a zIDX=zIDX/3


:: Finally, we can set do some proper initialization

set /a zIIDX=0

set zLO=

set zLL=""


:: Step through each line in the file, looking for line zIDX

for /f "delims=@" %%a in (c:\lines.txt) do call :zoo  %zIDX%  %%a


:: If line zIDX wasn't found, we'll settle for zee LastLine

if "%zLO%"=="" set zLO=%zLL%

goto awdun


:: See if the current line is line zIDX

:zoo


:: Save string of all parms

set zALL=%*


:: Strip off the first parm (sure hope lines aren't longer than 254 chars)

set zWORDS=%zALL:~2,255%


:: Make this line zee LastLine

set zLL=%zWORDS%


:: If this is the line we're looking for, make it zee LineOut

if {%1}=={%zIIDX%} set zLO=%zWORDS%


:: Keep track of line numbers

set /a zIIDX=%zIIDX% + 1

goto :eof




:awdun

echo ==%zLO%==


:: Be socially responsible

set zALL=

set zD1=

set zD2=

set zIDX=

set zIIDX=

set zLL=

set zLO=

:: But don't mess with seed

::set zNUM1=

set zNUM2=

set zWORDS=

要从文件的第一行开始设置一个环境变量，我使用以下命令:

rem a.txt contains one line: abc123
set /p DATA=<a.txt
echo data: %DATA%

这将输出:abc123

支持正则表达式的Findstr:

findstr "^[0-9].*" c:\windows\system32\drivers\etc\hosts