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bug#51921: Anything like ztail
From: |
Stephen Kitt |
Subject: |
bug#51921: Anything like ztail |
Date: |
Wed, 17 Nov 2021 22:58:14 +0100 |
On Wed, 17 Nov 2021 12:33:33 -0800, Paul Eggert <eggert@cs.ucla.edu> wrote:
> On 11/17/21 05:08, Peng Yu wrote:
> > Is there a way to make ztail more efficient?
>
> Not in general, no. The compressed file can't be decompressed from
> random locations.
>
> There might be some options for doing what you're suggesting if
> --rsyncable is used during compression (which it usually isn't) and if
> someone would like to code up something for gzip (which would be
> nontrivial).
gztool (https://github.com/circulosmeos/gztool) can be used to create
additional indexes and then use that to access a compressed file randomly
without decompressing everything; it supports tail-style operation as well.
Whether it’s actually useful will depend on the scenario.
Regards,
Stephen
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