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Re: pdksh: problem with read and string compare


On Thu, 24 Apr 2003, Thomas Muehlfriedel wrote:

> > Ok, so it is an erroneous line endings problem. The tmp file
> > containing the output of the external command has line seps of the
> > form 0x0d 0x0d 0x0a. Does it help if I switch the drive to text-mode
> > since drive e is mounted in binmode?
>
> > muehle at sparrow /cygdrive/e/DataDictionary/report/resource
> > $ mount
> > D:\software\cygwin\bin on /usr/bin type system (binmode)
> > D:\software\cygwin\lib on /usr/lib type system (binmode)
> > D:\software\cygwin on / type system (binmode)
> > c: on /cygdrive/c type user (binmode,noumount)
> > d: on /cygdrive/d type user (binmode,noumount)
> > e: on /cygdrive/e type user (binmode,noumount)
>
> > -thomas
>
> I can do whatever I like I cannot get rid of those 0d0d0a at the end of
> each line in the tmp file! I mounted the filesystem as text and played with
> the CYGWIN env variable. Whenever I redirect multi-line output from a
> standard windows program I get those endings. The tmp file looks like this:
>
> 00000000: 0d0d 0a31 2020 2020 2020 2020 2020 2020  ...1
> 00000010: 2020 2020 2020 200d 0d0a 2d2d 2d2d 2d2d         ...------
> 00000020: 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 2d2d 0d0d  --------------..
> 00000030: 0a20 2020 2020 2020 2020 2020 2020 2020  .
> 00000040: 2020 2020 2d0d 0d0a 0d0d 0a20 2031 2072      -......  1 r
> 00000050: 6563 6f72 6428 7329 2073 656c 6563 7465  ecord(s) selecte
> 00000060: 642e 0d0d 0a0d 0d0a
>
> And all I do is "db2 select ... " >tmp
> So why is this so?
>
> -thomas

Thomas,

Windows console programs *do* put 0d0a at line endings irrespective of any
cygwin settings or mounts.  If you then redirect the output to a file on a
text-mounted drive, an extra 0d will be added before a 0a (because that's
how text mounts work).  You might try piping the output through d2u.

The "extra 0d on console reads" problem that you're having in pdksh is a
separate beast entirely, and yes, it's probably related to the thread you
quoted earlier.
	Igor
-- 
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ZZZzz /,`.-'`'    -.  ;-;;,_		igor at watson dot ibm dot com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

Knowledge is an unending adventure at the edge of uncertainty.
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