How do you create a unique filename in a batch file?
Can the TIME /t and DATE /t be concatenated to a filename variable?

Cliff Cotterill wrote:

> How do you create a unique filename in a batch file?
> Can the TIME /t and DATE /t be concatenated to a filename variable?
>
>
>
- - - - - - - - - - begin screen capture WinXP - - - - - - - - - -
C:\cmd>demo\Timestamp123
20050317112924

C:\cmd>rlist demo\Timestamp123.cmd
=====begin C:\cmd\demo\Timestamp123.cmd ====================
1. @echo off
2. setlocal
3. for /f "tokens=2-4 delims=/ " %%a in (
4. 'date /t'
5. ) do set zdate=%%c%%a%%b
6. for /f "tokens=5-7 delims=:. " %%a in (
7. 'echo/^|time^|find "current"'
8. ) do set ztime=%%a%%b%%c
9. echo %zdate%%ztime%
=====end C:\cmd\demo\Timestamp123.cmd ====================
- - - - - - - - - - end screen capture WinXP - - - - - - - - - -

--
Phil Robyn
Univ. of California, Berkeley

u n z i p m y a d d r e s s t o s e n d e - m a i l

Cliff Cotterill wrote:

> How do you create a unique filename in a batch file?
> Can the TIME /t and DATE /t be concatenated to a filename variable?
Hi

One way is to from your batch file create a temporary vbscript
file on the fly and pick up the result, more here:

http://groups.google.co.uk/groups?se...TNGP09.phx.gbl

and
http://www.jsiinc.com/SUBR/tip8600/rh8600.htm


You can do it with "pure" batch file as well, using e.g the batch date
time functions from Ritchie Lawrence batch library available at
http://www.commandline.co.uk/lib


--
torgeir, Microsoft MVP Scripting and WMI, Porsgrunn Norway
Administration scripting examples and an ONLINE version of
the 1328 page Scripting Guide:
http://www.microsoft.com/technet/scr...r/default.mspx

"Torgeir Bakken (MVP)" <Torgeir.Bakken-(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Cliff Cotterill wrote:
>
> > How do you create a unique filename in a batch file?
> > Can the TIME /t and DATE /t be concatenated to a filename variable?
> Hi
>
> One way is to from your batch file create a temporary vbscript
> file on the fly and pick up the result, more here:
>
>
http://groups.google.co.uk/groups?se...TNGP09.phx.gbl
>
> and
> http://www.jsiinc.com/SUBR/tip8600/rh8600.htm
>
>
> You can do it with "pure" batch file as well, using e.g the batch date
> time functions from Ritchie Lawrence batch library available at
> http://www.commandline.co.uk/lib

A filename derived from the time and date is only guaranteed to be unique
if:

- the clock is never turned back, and if:
- such files are NEVER created outside of the script that uses the feature.

I would tend to add a random field (a la %random%), and check for existence
before assuming otherwise. If the file already existed, the script would
just re-build the name and try again.

/Al