中国DOS联盟

Originally posted by wfy150 at 2008-5-31 06:33 PM:
问下这个set/a !变量!中的"!"是怎么用的?

@echo off&setlocal enabledelayedexpansion

set /a y=%date:~,4%,m=100%date:~5,2%%%100,d=100%date:~8,2%%%100,mi=100%time:~3,2%%%100

if "%time:~,1%"=="" (set h=%time:~1,1%) else (set h=%time:~,2%)

set /a a=%y%%%4,b=%y%%%100,c=%y%%%400

if %c% equ 0 (set yun=A) else (if %a% equ 0 if %b% neq 0 set yun=A) 

if defined yun (set n=29) else (set n=28)

set /a mi-=40,h-=1

if %mi% lss 0 set /a mi+=60,h-=1

if %h% lss 0 set /a h+=24,d-=1

if %d% equ 0 set /a m-=1&goto lp

:cont

for %%i in (%y% %m%) do if %%i lss 10 (set str=!str!0%%i) else (set str=!str!%%i)

for %%i in (%d% %h% %mi%) do if %%i lss 10 (set var=!var!0%%i) else (set var=!var!%%i)

for /f "tokens=1,2,3,4,5,7 delims=-/: " %%a in ('dir /s /a-d *.*') do ( 

    if %%a%%b lss %str% (

       echo.%%f

       ) else (

       if %%a%%b equ %str% if %%c%%d%%e lss %var% echo.%%f

    )     

)

pause>nul&goto :eof

:lp

if %m% equ 2 set d=%n%&goto cont

if %m% equ 0 set m=12&set /a y-=1

for %%i in (1 3 5 7 8 10 12) do if %%i equ %m% set d=31&goto cont

for %%i in (4 6 9 11) do if %%i equ %m% set d=30&goto cont

@echo off&set tt=0

for /f "tokens=1-3 delims=-/\:. " %%i in ("%date%") do set /a p1=%%i,p2=100%%j%%100,p3=100%%k%%100

    for /f "tokens=1-3 delims=:" %%i in ('time/t') do set /a t1=100%%i%%100,t2=100%%j%%100

    set/a t1-=1,t2-=40

    if %t2% lss 0 set/a t2+=60,t1-=1

    if %t1% lss 0 set/a tt+=1,t1+=24

    if %p3% gtr %tt%  goto ppp

:nxt

   set/a p2-=1

   if %p2% equ 0 set/a p1-=1&&set p2=12

   set/a PN2="!(p1%%4)&!(!(p1%%100))|!(p1%%400)",PN2=28+PN2

   for /f "tokens=%p2%" %%i in ("31 %pN2% 31 30 31 30 31 31 30 31 30 31") do set/a p3=%p3%+%%i

   if %p3% leq %tt% goto nxt

:ppp

setlocal enabledelayedexpansion

   set/a p3=%p3%-%tt%

   for %%i in (p2 p3 t1 t2) do if "!%%i!" lss 10 set %%i=0!%%i!

   for /f "tokens=*" %%i in ('dir /b /a-d "*.*" 2^>nul') do (

   set "ta=%%~ti"

   if not "%%~fi" == "%~f0" (

   if "!ta:~0,4!!ta:~5,2!!ta:~8,2!!ta:~11,2!!ta:~14,2!" leq "!p1!!p2!!p3!!t1!!t2!" echo "%%~fi"

))

pause

Originally posted by plp626 at 2008-6-1 16:24:
要函数库干什么？
http://www.cn-dos.net/forum/viewthread.php?tid=39843&fpage=1&highlight=%E5%87%BD%E6%95%B0%E5%BA%93

Originally posted by terse at 2008-6-1 15:07:
也发一个对年月日的判断 欢迎测试
if "!ta:~0,4!!ta:~5,2!!ta:~8,2!!ta:~11,2!!ta:~14,2!" leq "!p1!!p2!!p3!!t1!!t2!" echo "%%~fi"
))

Originally posted by zw19750516 at 2008-6-1 07:40 PM:


&&这个好像是比较不了大小的，举个例子200805120728(2008年5月12日7
时28分)数值的总位数为12位超出了CMD所能处理的最大数值2147483647 ...