如何利用批处理文件获取前一天的日期
1. 利用CMD语句
@echo off rem 计算指定天数之前的日期 set DaysAgo=1 rem 假设系统日期的格式为yyyy-mm-dd call :DateToDays %date:~0,4% %date:~5,2% %date:~8,2% PassDays set /a PassDays-=%DaysAgo% call :DaysToDate %PassDays% DstYear DstMonth DstDay set DstDate=%DstYear%-%DstMonth%-%DstDay% echo %DaysAgo%天的日期是%DstDate% pause goto :eof :DateToDays %yy% %mm% %dd% days setlocal ENABLEEXTENSIONS set yy=%1&set mm=%2&set dd=%3 if 1%yy% LSS 200 if 1%yy% LSS 170 (set yy=20%yy%) else (set yy=19%yy%) set /a dd=100%dd%%%100,mm=100%mm%%%100 set /a z=14-mm,z/=12,y=yy+4800-z,m=mm+12*z-3,j=153*m+2 set /a j=j/5+dd+y*365+y/4-y/100+y/400-2472633 endlocal&set %4=%j%&goto :EOF :DaysToDate %days% yy mm dd setlocal ENABLEEXTENSIONS set /a a=%1+2472632,b=4*a+3,b/=146097,c=-b*146097,c/=4,c+=a set /a d=4*c+3,d/=1461,e=-1461*d,e/=4,e+=c,m=5*e+2,m/=153,dd=153*m+2,dd/=5 set /a dd=-dd+e+1,mm=-m/10,mm*=12,mm+=m+3,yy=b*100+d-4800+m/10 (if %mm% LSS 10 set mm=0%mm%)&(if %dd% LSS 10 set dd=0%dd%) endlocal&set %2=%yy%&set %3=%mm%&set %4=%dd%&goto :EOF
2. 利用Powershell提供的函数
@echo off & setlocal ENABLEEXTENSIONS for /f "delims=" %%a in ( 'PowerShell "&{Get-Date (Get-Date).AddDays(-1) -uformat "%%Y%%m%%d"}"' ) do ( if not defined date1 set date1=%%a ) echo %date1%