Echo date with offset -1 into dos: dos, echo, ftp, offset

by: dragon-itPosted on 2007-12-18 at 08:07:45ID: 20493134

SteveGTR has routines for date manipulation and will no doubt post in a mo. Another method though is to write a batch file out or a temp file with the date in scheduled to run before midnight, e..g.

@echo off
echo ftp <arguments> c:\path\3ComNBX__on_%date:/=-% > c:\scripts\yourbackup.cmd

then when the yourbackup.cmd is run the %date% entry will have been filled in.

Alternatively you could pickup the last entry in the folder potentially by date.

Steve

by: SteveGTRPosted on 2007-12-18 at 08:15:40ID: 20493213

Here you go:

@echo off
 
setlocal
 
call :GETDATEPARTS "%date%"
call :SUBTRACTDAYS 1
 
set yesterday=%yy%%mm%%dd%
 
REM ** Place your code here
 
echo Yesterday: %yesterday%
 
REM ** End of your code
 
goto :EOF
 
:GETDATEPARTS
 
set dt=%~1
set tok=1-3
 
if "%dt:~0,1%" GTR "9" set tok=2-4
 
set yyyy=
 
for /f "tokens=%tok% delims=.:/-, " %%a in ('echo %~1') do (
  for /f "skip=1 tokens=2-4 delims=/-,()." %%x in ('echo.^|date') do set %%x=%%a&set %%y=%%b&set %%z=%%c
)
 
if not "%yyyy%"=="" set yy=%yyyy%
 
if 1%yy% LSS 1000 (if %yy% LSS 70 (set yy=20%yy%) else (set yy=19%yy%))
if 1%mm% LSS 100 set mm=0%mm%
if 1%dd% LSS 100 set dd=0%dd%
 
goto :EOF
 
:SUBTRACTDAYS
 
set dayCnt=%1
 
if "%dayCnt%"=="" set dayCnt=1
 
REM Substract your days here
set /A dd=1%dd% - 100 - %dayCnt%
set /A mm=1%mm% - 100
 
:CHKDAY
 
if /I %dd% GTR 0 goto DONESUBTRACT
 
set /A mm=%mm% - 1
 
if /I %mm% GTR 0 goto ADJUSTDAY
 
set /A mm=12
set /A yy=%yy% - 1
 
:ADJUSTDAY
 
if %mm%==1 goto SET31
if %mm%==2 goto LEAPCHK
if %mm%==3 goto SET31
if %mm%==4 goto SET30
if %mm%==5 goto SET31
if %mm%==6 goto SET30
if %mm%==7 goto SET31
if %mm%==8 goto SET31
if %mm%==9 goto SET30
if %mm%==10 goto SET31
if %mm%==11 goto SET30
REM ** Month 12 falls through
 
:SET31
 
set /A dd=31 + %dd%
 
goto CHKDAY
 
:SET30
 
set /A dd=30 + %dd%
 
goto CHKDAY
 
:LEAPCHK
 
set /A tt=%yy% %% 4
 
if not %tt%==0 goto SET28
 
set /A tt=%yy% %% 100
 
if not %tt%==0 goto SET29
 
set /A tt=%yy% %% 400
 
if %tt%==0 goto SET29
 
:SET28
 
set /A dd=28 + %dd%
 
goto CHKDAY
 
:SET29
 
set /A dd=29 + %dd%
 
goto CHKDAY
 
:DONESUBTRACT
 
if /I %mm% LSS 10 set mm=0%mm%
if /I %dd% LSS 10 set dd=0%dd%
 
goto :EOF

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by: Dfoster05Posted on 2007-12-18 at 11:26:05ID: 31415841

Dragon, I think I'm going to go with your solution since it's the easiest to implement. We run the backups 7 days a week so I don't really need to worry about oldest file, the date will always be the day before. I should have thought about what you suggested in the first place!
Steve, this looks like a really handy thing to keep around but it's a bit more than I need. I'm giving you partial credit because I'll probably end up using it somewhere else someday and it was a great solution for the issue even if I'm not going to use it.

Thanks both of you

by: dragon-itPosted on 2007-12-18 at 14:54:42ID: 20496318

Glad it helped.... sorry Steve :-)

by: SteveGTRPosted on 2007-12-18 at 15:11:28ID: 20496415

Sorry for what?

by: dragon-itPosted on 2007-12-18 at 15:32:42ID: 20496532

Just by diving in ahead of your sledge-hammer style fix-all date scripts.... I really must use one of them one day myself, In my scripts I've taken the cheaty approach to weekly backups by doing them when the day is divisable by 7 etc.. but your own stuff is always the last to get fixed :-)

Merry Christmas and all that

Steve

by: SteveGTRPosted on 2007-12-18 at 15:35:56ID: 20496553

You must understand that this is a public forum and all experts are encouraged to participate. God knows that if all questioners had to rely on a subset of experts to answer their questions this site wouldn't work. Plus the experts would wear out and the questioners would be disgruntled... Not a pretty scene.

by: dragon-itPosted on 2007-12-19 at 00:44:53ID: 20498218

I know, hence the :-) Anyway I need the points to make it to "MS-DOS wizard" :-)

by: jrhelgesonPosted on 2008-11-06 at 08:39:52ID: 22896910

Or you could just get the datestamp by doing the following:

set datestamp=%date:~10%%date:~4,2%%date:~7,2%
echo %datestamp%

The output would be YYYYMMDD

Joel

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Echo date with offset -1 into dos

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dos

echo

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File Transfer Protocol (FTP)

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