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Questions[gzip](ubuntu)

Martin Hope
martin
Asked: 2017-08-14 18:41:00 +0800 CST
  • 20

I have a file named like file.bin.gz.

I tried using gzip -d f.bin.gz to uncompress it, and got a .bin file.

Is the correct way to uncompress .bin files to use gzip -d? Also, .bin is a binary file, right?

gzip
Martin Hope
Herman Toothrot
Asked: 2015-11-04 04:33:22 +0800 CST
  • 33

I have tried both gzip and gunzip commands but I get either

gunzip *.gz 
gzip: invalid option -- 'Y' 

gunzip -S-1800-01-01-000000-g01.h5.gz  
gzip: compressed data not read
 from a terminal. Use -f to force decompression. For help, type: gzip -h

If I try the -f option it takes a very long time to work on one single file and the command is not executed successfully. Am I missing something?

gzip
Martin Hope
Sadik
Asked: 2014-07-12 03:58:16 +0800 CST
  • 18

I'm trying to gzip all files on ubuntu that have the file extension .css, .html or .js. in a top directory and all subdirectories. I want to keep the original files and overwrite the .gz file, if already existing.

So when I have n files, I want to keep these n files and create additional n archive files. Not just one.

My try was to run a script that looks like this:

gzip -rkf *.css
gzip -rkf *.html
... one line for each file extension

First: I need to have one line in that script for each file extension I want to gzip. That's ok, but I hope to find a better way

Second and more important: It does not work. Although -r should do the job, the subdirectories are unchanged. The gzip file is only created in the top directory.

What am I missing here?

Btw: The following is a bug in the verbose output, right? When using -k and -v option

-k, --keep        keep (don't delete) input files
-v, --verbose     verbose mode

The verbose output says it replaces the file, although "replace" means that the original file does not exist after the replace. Anyway, THis is only the output thing.

$ ls
  index.html      subdir1  testfile      testfile.css.gz
  javaclass.java  subdir2  testfile.css
$ gzip -fkv *.css
  testfile.css:   6.6% -- replaced with testfile.css.gz
$ ls
  index.html      subdir1  testfile      testfile.css.gz
  javaclass.java  subdir2  testfile.css
gzip
Martin Hope
Lee
Asked: 2014-04-27 04:29:32 +0800 CST
  • 18

I have been using the GUI (right click => compress) to try and compress a .tar containing 3 videos totalling 1.7gb (.H264 MP4s). gzip, lrzip, 7z etc. all do nothing to the file size and the compressed folder is also 1.7 gb.

I then tried running lrzip from the command line (in case it was a gui problem), and used the -z flag (extreme compression), and this was my output.

enter image description here

As the compression ratio shows, the actual size of the compressed folder is bigger than the original! I don't know why I am having no luck, lrzip in particular should be effective according to random reviews I have read and the official docs (files larger than 100mb, the larger the better) - see https://wiki.archlinux.org/index.php/Lrzip

Why can't I compress my files?

gzip
Martin Hope
AndrewR
Asked: 2011-09-23 22:53:08 +0800 CST
  • 68

On Fedora/Redhat/CentOS the less command seems to magically detect a gzipped file and decompress it on the fly, so you can do:

less my_stuff.csv.gz

I've just noticed this doesn't work on Ubuntu 11

less my_stuff.csv.gz
"my_stuff.csv.gz" may be a binary file.  See it anyway?

I've been examining my CentOS VMs to see if there's some shell alias magic that makes it work but there doesn't seem to be. Is gzip support just built in to the CentOS binary?

If anyone knows how this works on CentOS and/or how it can be made to work on Ubuntu I'd be grateful.

I'm aware I can do

zcat my_stuff.csv.gz | less

but that would make my keyboard wear out more quickly.

gzip