Subj : uncompression
To   : MRO
From : Digital Man
Date : Tue May 06 2025 20:54:51

  Re: uncompression
  By: MRO to Digital Man on Tue May 06 2025 08:49 pm

 >   Re: uncompression
 >   By: Digital Man to MRO on Tue May 06 2025 05:58 pm
 >
 >  >  >  > Right, .gz files aren't archives. No plan to support them directly
 >  >  >  > in SBBS. .tgz / .tar.gz files *are* supported however.
 >
 >  >  > well a .gz file is a single compressed file, right?
 >
 >  > No, it's a block of compressed data which may not have originally been a
 >  > file.
 >
 >  >  > so why are you saying it's not an archive format?
 >
 >  > Becaue it's not. An archive file/format contains one or more files, their
 >  > data/contents and metadata about those files (e.g. file name, date/time,
 >  > size, checksum) - a .gz file doesn't contain any of that.
 >
 >  > A .tar file is an archive.
 >  > A .gz file is compressed data.
 >  > A .tar.gz (or .tgz) is a compressed archive.
 >
 > well i only worked with .gz files long ago.  but only when i HAD to, so i'm
 > a bit confused about why you think that it's not an archive format.
 >
 > so i used gzip and created an archive
 >
 > root@linux:~# gzip -l shit.rar.gz
 >          compressed        uncompressed  ratio uncompressed_name
 >            12861660            12860366  -0.0% shit.rar
 > root@linux:~# gzip -l -v  shit.rar.gz
 > method  crc     date  time           compressed        uncompressed  ratio
 > uncompressed_name
 > defla d61855b3 Sep  7 12:47            12861660            12860366  -0.0%
 > shit.rar
 >
 > as you can see, the archive i created shows crc, date time the compressed
 > and uncompressed size, the ratio and the uncompressed filename
 > https://i.imgur.com/EwYcPym.png

Those header fields are optional: https://en.wikipedia.org/wiki/Gzip

 > so it meets the criteria you mentioned for archives, right?

No.

 > so yes, it's one file but it's a compressed archive.

If a library can only store one book, is it still a library? No, it's not.
-- 
                                            digital man (rob)

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