All Questions
Tagged with gzip compression
78 questions
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tar extracted file with bad output
I tarred one file with:
tar cf My-tarball.tar path/to/file.txt
Then compressed it:
gzip My-tarball.tar
But when i decompress it and extract it
gunzip My-tarball.tar.gz
tar -xf My-tarball.tar
the ...
1
vote
0
answers
31
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Extract and merge multipe tar gz [duplicate]
I have multiple tar.gz archives, the size of each archive is approximately 40 GB:
v1.0-trainval01_blobs.tgz
v1.0-trainval01_blobs.tgz
...
v1.0-trainval10_blobs.tgz
I can unpack each archive and get ...
- 11
0
votes
1
answer
71
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Is it possible to compress a tar ball with gzip/bzip2/xz after tar ball file has been created?
If we create a tar ball file by giving the following command
tar -cvf Docs.tar $HOME/Documents/*
then post creation of the tar ball is it possible to use gzip or bzip2 or xz or some other compression ...
- 116
1
vote
0
answers
184
views
Recoverably recompress gzip files into zstd, preserving original checksums?
I need to archive a lot of gzip-compressed data. The problem is that compared to zstd, gzip is wasteful, both in terms of ratio and CPU time required to decompress the data. Because of that, I want to ...
- 1,381
0
votes
2
answers
271
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tar: ./.tar.gz: file changed as we read it | "Flagged" files are unrelated to the file tar is supposed to operate on
I am trying to use tar to recursively compress all files with the .lammpstrj extension within the directory tree starting at the directory whose path is stored in the variable home. home contains the ...
0
votes
2
answers
211
views
extending recursive find to .tar, tar.gz, tar.bz2, and tar.xz on Debian 12
Continuing find a file within a tar.gz archive, how is it possible to automatically recursively search for files with given names, including the files inside the archives and compressed archives?
For ...
- 1
0
votes
1
answer
180
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How to verify size of pigz (parallel gzip) archive contents? [duplicate]
I created some pigz (parallel gzip) - home page - compressed archives of my SSD disk drives. (compiled version 2.8)
I called one of them 4TB-SATA-disk--Windows10--2024-Jan-21.img.gz which says the ...
- 30.7k
-1
votes
1
answer
72
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How can I evaluate tars and gzips for validity without expanding them?
LONG ago I wrote a backup script for our site and have updated it ever since. However, occasionally things go wrong and some of the older backups are now broken.
In days gone by I had used the utility ...
- 268
1
vote
1
answer
3k
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Normal gz file not extractable by tar [duplicate]
I have a gz archive but for some reason tar said that the format is incorrect even though I can double click it in mac Finder and extract it normally, and file command shows the same format just like ...
- 2,405
0
votes
1
answer
373
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Extract first n bytes from .tar.gz and output as a .tar.gz in a single command
I have a .tar.gz as input and want to extract the first 128 MiB of it and output as a .tar.gz in a single command. I tried:
sudo tar xzOf input.tar.gz | sudo dd of=output bs=1M count=128 iflag=...
- 3,606
1
vote
0
answers
732
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Compressing small files with gzip makes its size smaller than with bzip2, why? [closed]
I have a question, just a little thing couch my eyes
it's about compression with gzip and bzip2:
If I understood correctly - bzip2 requires more processing power but compresses files smaller and more ...
- 11
1
vote
1
answer
553
views
Why GZIP utility cares about extension?
Whenever I need to decompress a file which was compressed with Gzip, I need to rename the file with a .gz extension , I tried other compression utility like zip, bzip2 and they don't seem to care ...
- 13
0
votes
0
answers
1k
views
Unable to decompress gzip file ("not in gzip format")
I've been tasked with diagnosing an issue with a webpage, and I've been able to trace the issue back to a gzip'ed JavaScript file, jquery.min.js.gz. To view the code, I've downloaded and attempted to ...
0
votes
2
answers
945
views
Compress several files according to the pattern
I would like to know how to compress several files according to the pattern using gzip, tar, etc... that is, if I have these files:
server_regTCA.log.2021.02.12
server_regTCA.log.2021.02.13
...
-1
votes
1
answer
741
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Pick random line from a compressed text file with zcat/gz or altnernatives
I have a simple bash script that picks a random line from a text file. This is originally done with shuf file.txt | head -1 (the same result can be achieved with cat file.txt | shuf | head -1). I also ...
- 155