Converting gzip files to bzip2 efficiently

Posted by sundar on Super User See other posts from Super User or by sundar
Published on 2009-08-17T00:45:54Z Indexed on 2012/12/15 11:09 UTC
Read the original article Hit count: 413

Filed under:

conversion

|

gzip

I have a bunch of gzip files that I have to convert to bzip2 every now and then. Currently, I'm using a shell script that simply 'gunzip's each file and then 'bzip2's it. Though this works, it takes a lot of time to complete.

Is it possible to make this process more efficient? I'm ready to take a dive and look into gunzip and bzip2's source codes if necessary, but I just want to be sure of the payoff. Is there any hope of improving the efficiency of the process?

© Super User or respective owner

Related posts about conversion

Conversion constructor vs. conversion operator: precedence

as seen on Stack Overflow - Search for 'Stack Overflow'
Reading some questions here on SO about conversion operators and constructors got me thinking about the interaction between them, namely when there is an 'ambiguous' call. Consider the following code: class A; class B { public: B(){} B(const A&) //conversion constructor … >>> More
Conversion of bytes into a type without changing the application (ie storing the conversion method i

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there a way to store a conversion strategy (for converting some bytes) into a database and then execute it on the run time. If one were to store a complete java file, you would need to compile it, store the class and some how inject into the already running system. I am not sure how this would… >>> More
General type conversion without risking Exceptions

as seen on Stack Overflow - Search for 'Stack Overflow'
I am working on a control that can take a number of different datatypes (anything that implements IComparable). I need to be able to compare these with another variable passed in. If the main datatype is a DateTime, and I am passed a String, I need to attempt to convert the String to a DateTime… >>> More
Create a Unit Conversion Application with the Zend_Measure Component

as seen on Internet.com - Search for 'Internet.com'
Learn how to create a simple conversion calculator using the Zend Framework's Zend_Measure component ... >>> More
Create a Unit Conversion Application with the Zend_Measure Component

as seen on Internet.com - Search for 'Internet.com'
Learn how to create a simple conversion calculator using the Zend Framework's Zend_Measure component ... >>> More

Related posts about gzip

Twitterbot/0.1,gzip(gfe),gzip(gfe)

as seen on Server Fault - Search for 'Server Fault'
I see a lot of this on my google app engine error log: 05-18 06:44AM 00.897 /NTp9 405 17ms 0cpu_ms 0kb Twitterbot/0.1,gzip(gfe),gzip(gfe) 128.242.241.133 - - [18/May/2010:06:44:00 -0700] "HEAD /NTp9 HTTP/1.1" 405 124 - "Twitterbot/0.1,gzip(gfe),gzip(gfe)" Should I do something for it?? >>> More
ASP.NET GZip Encoding Caveats

as seen on West-Wind - Search for 'West-Wind'
GZip encoding in ASP.NET is pretty easy to accomplish using the built-in GZipStream and DeflateStream classes and applying them to the Response.Filter property. While applying GZip and Deflate behavior is pretty easy there are a few caveats that you have watch out for as I found out today for… >>> More
How do I turn on gzip in Apache2?

as seen on Server Fault - Search for 'Server Fault'
I simply did : sudo aptitude install apache2 And that's how my server is set up. No extra modules, no nothing. I'm on ubuntu jaunty. >>> More
I can't update my system properly, "no package header" error

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Every time I try to run sudo apt-get update or try running updates from the GUI interface I run into the following problem or something similar: Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise_restricted_binary-i386_Packages E:… >>> More
Twitterbot/0.1,gzip(gfe),gzip(gfe)

as seen on Stack Overflow - Search for 'Stack Overflow'
I see a lot of this on my google app engine error log: 05-18 06:44AM 00.897 /NTp9 405 17ms 0cpu_ms 0kb Twitterbot/0.1,gzip(gfe),gzip(gfe) 128.242.241.133 - - [18/May/2010:06:44:00 -0700] "HEAD /NTp9 HTTP/1.1" 405 124 - "Twitterbot/0.1,gzip(gfe),gzip(gfe)" May I know what is this? >>> More