batch files and environmental variables

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jamesla

85 posts

Master Geek

#53850 14-Dec-2009 14:12

Hi guys long story short why doesn't this work?

C:\>echo sddsfsdfd > "%date%.txt"
The system cannot find the path specified.

If I use:

C:\>echo sddsfsdfd > %date%.txt

It works but because %date% = Mon 14/12/2009 (and there is a space between Mon and 14)

It will save the file as just Mon.txt

How do I get it to save as Mon 14/12/2009.txt???

bazzer

3438 posts

Uber Geek
+1 received by user: 267

Trusted

#282331 14-Dec-2009 15:06

It might be because the filename can't contain "/"?

BartManGeek

187 posts

Master Geek

#282337 14-Dec-2009 15:24

try the following:
Set FileDate=%date:/=%
C:\>echo sddsfsdfd > %FileDate%.txt

Set FileDate=%date:/=%
Strips the "/" from the date.

Set FileDate=%date:/=-%
Will swap the "/" for "-"

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bazzer

3438 posts

Uber Geek
+1 received by user: 267

Trusted

#282342 14-Dec-2009 15:30

Or if you change the short date separator from "/" to "-", it will work too.

lurker

838 posts

Ultimate Geek
+1 received by user: 223

Lifetime subscriber

#282346 14-Dec-2009 15:40

You can also break up the date output into separate tokens with a FOR command, eg:

for /F "tokens=1-2 usebackq delims== " %%f in ('%date:/=%') do set a=%%g.txt
echo Testing > %a%

would give you filename something like 14122009.txt
Otherwise you still have the "Mon.txt" problem.
If you want the "Mon" included just change the set command to include "%%f".

jamesla

85 posts

Master Geek

#282400 14-Dec-2009 17:41

awesome cheers guys that works, kind of feel like an idiot now :-)

jamesla

85 posts

Master Geek

#282441 14-Dec-2009 19:08

hmm I'm trying to fix %time% up now :D

How would I write a for loop like the one lurker did above to change the way %time% displays

C:\Users\james>echo %time%
19:07:18.92

I want it in this format 1907

This is as far as I have got but man batch files can be bloody confusing...

for /f "tokens=1,2 delims=:" %%i in ('%time%') do SET time=%%i%%j
echo %time%

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lurker

838 posts

Ultimate Geek
+1 received by user: 223

Lifetime subscriber

#282467 14-Dec-2009 20:39

You forgot the usebackq parameter, try putting that in between your token & delimiter ones and it should work.