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Length Limit When Using SET/P VAR=<\path\file
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pro...@berkeley.edu
Sep 30, 2016, 6:03:46 PM9/30/16
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I've been using this for years but never realized (and it doesn't appear to be
documented) that when you read the first line from a file and assign it to a
variable with SET /P myvariable=<\mypath\myfile, the amount of data read seems
to be limited to 1023 bytes. But if one uses
for /f "tokens=*" %X in (\mypath\myfile) do set myvariable=%X
then the entire content of the record will be read (up to the limit of 8192
bytes). Following is copied from my console window (Win7 Pro).
>dir \cmd\data\stat26 | find "stat"
09/29/2016 04:48 PM 3,746 stat26
>reccount \cmd\data\stat26 .
File \cmd\data\stat26 has 1 records.
>set/p _t1=<\cmd\data\stat26
>strlen %_t1%
>set strlen
strlen=1023
>for /f "tokens=*" %X in (\cmd\data\stat26) do @set _t2=%X
>strlen %_t2%
>set strlen
strlen=3743
I didn't do an exhaustive search, but this limit doesn't seem to be documented.
To me, it was a surprise to find that more than half of my record was not being
read with the SET/P method.
Or is this another example of something I once knew but have now forgotten? ;-)
--
Phil Robyn
documented) that when you read the first line from a file and assign it to a
variable with SET /P myvariable=<\mypath\myfile, the amount of data read seems
to be limited to 1023 bytes. But if one uses
for /f "tokens=*" %X in (\mypath\myfile) do set myvariable=%X
then the entire content of the record will be read (up to the limit of 8192
bytes). Following is copied from my console window (Win7 Pro).
>dir \cmd\data\stat26 | find "stat"
09/29/2016 04:48 PM 3,746 stat26
>reccount \cmd\data\stat26 .
File \cmd\data\stat26 has 1 records.
>set/p _t1=<\cmd\data\stat26
>strlen %_t1%
>set strlen
strlen=1023
>for /f "tokens=*" %X in (\cmd\data\stat26) do @set _t2=%X
>strlen %_t2%
>set strlen
strlen=3743
I didn't do an exhaustive search, but this limit doesn't seem to be documented.
To me, it was a surprise to find that more than half of my record was not being
read with the SET/P method.
Or is this another example of something I once knew but have now forgotten? ;-)
--
Phil Robyn
Tom Del Rosso
Sep 30, 2016, 6:42:17 PM9/30/16
to
What about this?
type \cmd\data\stat26 | set/p _t1=
type \cmd\data\stat26 | set/p _t1=
pro...@berkeley.edu
Sep 30, 2016, 11:35:36 PM9/30/16
to
Herbert Kleebauer
Oct 1, 2016, 4:00:00 AM10/1/16
to
On 01.10.2016 00:03, pro...@berkeley.edu wrote:
> Or is this another example of something I once knew but have now forgotten? ;-)
That's the good (or bad) thing of Google, it never forgets something:
> Or is this another example of something I once knew but have now forgotten? ;-)
http://www.dostips.com/forum/viewtopic.php?t=2160
Tom Del Rosso
Oct 1, 2016, 9:13:46 AM10/1/16
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I wonder what's going on there.
pro...@berkeley.edu
Oct 2, 2016, 2:04:23 AM10/2/16
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