[windows2000] Re: Appending logs to plain text-files
- From: Mark Cook <mc@xxxxxxxxxx>
- To: "'windows2000@xxxxxxxxxxxxx'" <windows2000@xxxxxxxxxxxxx>
- Date: Wed, 10 Nov 2004 14:58:45 -0000
Jon,
The 1>> 2>> (even 1> and 2>) are not new, they've been around since adam was
a lad, even in early version of DOS, I've used them for years ! It's
inherited as kind of an indirect result to using C compilers (and it's
variants) with STDIO and STDERR libraries for text output - but hey, who's
that bothered where they came from; I'll shut up :-) coz they're there now
and they work...
Mark
-----Original Message-----
From: Spriggs Jon [mailto:Jon.Spriggs@xxxxxxxxxxxxxx]
Sent: 10 November 2004 14:57
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: Appending logs to plain text-files
Chevrons are part of the input, output, piping system that Windows inherited
from DOS (and I suspect, DOS inherited from Unix - but I might be wrong).
The single right facing chevron (>) creates or overwrites output to a file
The double right facing chevron (>>) appends output to a file
The single left facing chevron (<) reads text from a file
The bar or pipe character (|) uses the output of one program as the input of
another
The numbers 1 and 2 are a fairly new addition, and I've definitely come
across these before in Linux, so when I saw 1>> instead of the >> I used on
one occasion, I tried adding 2>> and it worked... The only time I've seen
documentation about piping and redirection has been in DOS books...
Regards,
Jon Spriggs
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-----Original Message-----
From: Sorin Srbu [mailto:Sorin.Srbu@xxxxxxxxxxxxx]
Sent: 10 November 2004 14:41
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: Appending logs to plain text-files
On Wed, 10 Nov 2004 14:35:45 -0000, Spriggs Jon wrote:
>Nope... If you use a single chevron character it creates or overwrites
>a file, if you use two it appends.
Cool, thanks!
How come I've seen those chevron-documentations, I assume they are, aren't
they??
>-----Original Message-----
>From: Sorin Srbu [mailto:Sorin.Srbu@xxxxxxxxxxxxx]
>Sent: 10 November 2004 14:30
>To: windows2000@xxxxxxxxxxxxx
>Subject: [windows2000] Re: Appending logs to plain text-files
>
>
>On Wed, 10 Nov 2004 13:42:20 -0000, Spriggs Jon wrote:
>
>>Copy "\\msi-server\msi\Eudora v6.2.0.14 Custom\Eudora"
>>"\\%1\c$\program
>>files\qualcomm\eudora" /Y 1>>%computername%.txt 2>>%computername%.txt
>>
>>Copy "\\msi-server\msi\Eudora v6.2.0.14 Custom\Eudora\plugins"
>>"\\%1\c$\program files\qualcomm\eudora\plugins" /Y
>>1>>%computername%.txt
>>2>>%computername%.txt
>>
>>1 is normal output and 2 is error output. Or at least... I think that
>>should work.
>
>Ummm... Assuming the computername is the same in both line
>copy-procedure1
>(...eudora) and in copy-procedure 2 (...plugins), won't the log-file in 1
>(...eudora) be overwritten in line 2 (...plugins)?
>
>I plan to hold the logs temporarily in one and the same shared folder,
>on a server.
BW,
Sorin
> Sorin Srbu, Systems Engineer Web:
http://www.farmfak.uu.se/organisk/
> Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 >> 3
signals >> GSM
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> Box 574, Uppsala University, Fax: +46 (0)18-4714474
> SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b
>
> Public PGP key available on request.
>
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