Batch file: getting only the last 2 digits of the year

[BatchRocks]

You amaze me.

It's 09, Echo 09, In 2010, Echo 10

[Dias de verano]

I really really hate debug scripts. Cryptic plus they create .com executables of unprovable (to most users) freedom from nasty side effects. You can do all the date stuff in VBScript, and writing a batch to supply parameters and get back data is a trivial task, and the workings are (reasonably) transparent.

[macdad-]

You amaze me.

It's 09, Echo 09, In 2010, Echo 10

who?

but heck Reno, just basically owned it..but why create an executable?

[BatchFileCommand]

I think this thread is pointless! WHO CARES ABOUT THE LAST DIGITS OF THE YEAR! just do this.

Code: [Select]

echo %date:-~4%

I don't think you will need this program in 7991 years (when they add another digit to the date).

[macdad-]

if he wants the last two digits, then so be it.

but i think we scared away ADH....whoops

[Reno]

my preference in batch is to stick with the availaible command on working environment. but sometimes using batch cmd only has its limitation, namely accessing RTC, date manipulation, floating point math, program automation, accessing http, etc.
i am not doubting that VBScript can do a lot of stuff in a few lines, i often use it too when i got stuck with just cmd.
as for malicious code, i believe there is more of it written in vbs rather than ms-debug.

maybe the debug code could be useful in DOS. it's just an example on various ways to get YY of date. i will delete that part if anyone is offended with the code. just let me know.
i edited the code to include warning message before creating the .com executable file.

[BC_Programmer]

Code: [Select]

echo wscript.echo right(year(CDate(wscript.arguments(0))),2) > temp.vbs
start temp.vbs

it will echo the last two digits of the year. Note that the provided date will need to be in a format recognized by the current system locale; mine for example is mm/dd/yyyy. Also, it crashes if no arguments are provided with subscript out of range (not surprising).

I cant remember the for command used to redirect output of a command into a environment variable, but I'm sure that would work here.

@Reno: I don't think anybody really had an issue with the debug script, just that it's a bit much 

Also- you can open a VBScript and read it- that isn't possible with an assembled COM file.

And another problem is that Debug, I believe creates a Tiny Memory model 16-bit Dos executable, which won't run on a 64-bit machine 

of course as a solution for pure DOS which doesn't have VBScript installed, (and also assuming it's a MS-DOS distribution as opposed to PC-DOS which included REXX) then it's a workable solution.

I think this thread is pointless! WHO CARES ABOUT THE LAST DIGITS OF THE YEAR! just do this.

Code: [Select]

echo %date:-~4%

I don't think you will need this program in 7991 years (when they add another digit to the date).

 

Not exactly portable to different locales. my %DATE% variable is:

Code: [Select]

Thu 03/12/2009
hmm, start at the fourth character...

Code: [Select]

03/12/2009
and we get the entire date; so I'm confused as to what this accomplishes.

Also, I might add it doesn't even do that, it just echos "date:-~4".

Not sure exactly how that would work anyway, since even if the format was, for example yyyy/mm/dd, then it would just grab the entire date, not counting the weekday.

[macdad-]

Code: [Select]

echo wscript.echo right(year(CDate(wscript.arguments(0))),2) > temp.vbs
start temp.vbs

it will echo the last two digits of the year. Note that the provided date will need to be in a format recognized by the current system locale; mine for example is mm/dd/yyyy. Also, it crashes if no arguments are provided with subscript out of range (not surprising).

I cant remember the for command used to redirect output of a command into a environment variable, but I'm sure that would work here.

@Reno: I don't think anybody really had an issue with the debug script, just that it's a bit much 

Also- you can open a VBScript and read it- that isn't possible with an assembled COM file.

And another problem is that Debug, I believe creates a Tiny Memory model 16-bit Dos executable, which won't run on a 64-bit machine 

of course as a solution for pure DOS which doesn't have VBScript installed, (and also assuming it's a MS-DOS distribution as opposed to PC-DOS which included REXX) then it's a workable solution.

 

Not exactly portable to different locales. my %DATE% variable is:

Code: [Select]

Thu 03/12/2009
hmm, start at the fourth character...

Code: [Select]

03/12/2009
and we get the entire date; so I'm confused as to what this accomplishes.

Also, I might add it doesn't even do that, it just echos "date:-~4".

Not sure exactly how that would work anyway, since even if the format was, for example yyyy/mm/dd, then it would just grab the entire date, not counting the weekday.

you actually dont need all that code:

Code: [Select]

@echo off
set digit=%DATE:~12,2%
echo %digit%
pause
but if you have a different date format, then let me know(this one is DDD MM/DD/YYYY, e.g. Thu 03/11/2009)

Hope this Helps
,Nick(macdad-)

 
it doesn't need VBScript, nor Debug....

[Dias de verano]

Code: [Select]

@echo off
set digit=%DATE:~12,2%
echo %digit%
pause
Macdad, what exactly is that code supposed to do?

[macdad-]

retrieve the last two digits of the year...and i already asked if he need another one if he had his regional settings different:
http://www.computerhope.com/forum/index.php/topic,78577.msg517776.html#msg517776

thats what ADH wanted:

Like in: for /f "tokens=1-4 delims=/ " %%d in ("%date%") do @echo %%f%%e%%d
but I want only the 09 out of 2009

[Dias de verano]

i already asked if he need another one if he had his regional settings different:

ADH never answered.

[macdad-]

i know:

if he wants the last two digits, then so be it.

but i think we scared away ADH....whoops