符号链接:

mklink /d directorylink ..\realdirectory
mklink filelink realfile

该命令是Windows Server 2008及更新版本(包括Vista和Windows 7)上的本机命令。(它也包含在一些Windows资源包中。)

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…

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=

使用空格和转义字符完全控制输出:

echo.    ^<resourceDir^>/%basedir%/resources^</resourceDir^>

子例程(输出42):

    @echo off
    call :answer 42
    goto :eof
:do_something
    echo %1
    goto :eof

子例程返回一个值(输出0、1、2，等等):

    @echo off
    setlocal enableextensions enabledelayedexpansion
    call :seq_init seq1
:loop1
    if not %seq1%== 10 (
        call :seq_next seq1
        echo !seq1!
        goto :loop1
    )
    endlocal
    goto :eof

:seq_init
    set /a "%1 = -1"
    goto :eof
:seq_next
    set /a "seq_next_tmp1 = %1"
    set /a "%1 = %seq_next_tmp1% + 1"
    set seq_next_tmp1=
    goto :eof

获取当前的日、月和年(独立于locale):

for /f "tokens=1-4 delims=/-. " %%i in ('date /t') do (call :set_date %%i %%j %%k %%l)
goto :end_set_date

:set_date
if ("%1:~0,1%" gtr "9") shift
for /f "skip=1 tokens=2-4 delims=(-)" %%m in ('echo,^|date') do (set %%m=%1&set %%n=%2&set %%o=%3)
goto :eof

:end_set_date

echo day in 'DD' format is %dd%; month in 'MM' format is %mm%; year in 'YYYY' format is %yy%