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From: "Carlos E.R." <robin_listas@es.invalid>
Newsgroups: comp.os.linux.misc
Subject: Re: Are We Back to the "Wars" Now ?
Date: Sat, 23 Nov 2024 14:39:40 +0100
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On 2024-11-23 08:41, Lawrence D'Oliveiro wrote:
> On Sat, 23 Nov 2024 01:27:25 -0500, 186282@ud0s4.net wrote:
> 
>> On 11/23/24 12:19 AM, Lawrence D'Oliveiro wrote:
>>>
>>> You didn’t realize IPC on *nix is industrial-strength?
>>
>> I know it CAN handle BIG transactions.
>>
>> But SHOULD it ?
> 
> That’s what it’s designed for!

I use named pipes on my backup script.

I dd a hard disk partition, compress it, and at the same time calculate a checksum.

     mkfifo mdpipe
     dd if=/dev/$1  status=progress  bs=16M | tee mdpipe | pigz -3 > $3.gz &
     md5sum -b mdpipe | tee -a md5checksum_expanded
     wait
     rm mdpipe
     echo "$3" >> md5checksum_expanded

This way there is only one disk read operation. I can see the thing running at max hard disk speed.

-- 
Cheers, Carlos.