[tpm] Writing to STDOUT in batches

[Antonio Sun]

That actually is OK.

In fact, I have more "directions" than just shown. I.e., I have more piping
in $cmd than the leading one, and it worked great.

cheers

On Mon, Dec 6, 2010 at 3:20 PM, J. Bobby Lopez <jbl at jbldata.com> wrote:

> When you say you got too carried away, I'm guessing the problem was that
> you were using directions twice?
>
> One in the $cmd:
>
>   e.g.,  ' | sed...'
>
> .. and the other (>>) outside  the $cmd:
>
> e.g.,  open (OUTFILE, "$cmd >> myfile" )
>
>
>
> Bobby
>
> On Mon, Dec 6, 2010 at 11:36 AM, Antonio Sun <antoniosun at lavabit.com>wrote:
>
>>
>> On Mon, Dec 6, 2010 at 10:22 AM, Antonio Sun <antoniosun at lavabit.com>wrote:
>>
>>> Hi,
>>>
>>> I have the following code in a loop:
>>>
>>>     open(OUTFILE, "$cmd >> myfile"); # append write
>>>     print OUTFILE content();
>>>     close(OUTFILE);
>>>
>>> The $cmd is a complicated sed command. For simplicity purpose, let's say
>>> it is
>>>
>>>   | sed -n '10,20p'
>>>
>>> I.e., printing only lines 10~20 of the content of each loop.
>>>
>>> My goal is to write to STDOUT instead of a fixed file. I tried to change
>>> the above open statement with
>>>
>>>     open(OUTFILE, "$cmd >-");   # write to STDOUT
>>>
>>> or,
>>>
>>>     open(OUTFILE, "$cmd >>-");   # write to STDOUT
>>>
>>> but didn't get any output.
>>>
>>
>> Thank you Richard to have solved my problem. -- I was too carried away
>> with redirections. As you've pointed out, this alone work just as expected:
>>
>>      open(OUTFILE, "$cmd");   # write to STDOUT
>>
>> Thanks
>>
>>
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>>
>>
>
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