Packing with tar gzip, bzip2 and zip
Looking on my block at the end of the year i see than nearly two years ago i wrote about extracting archives under Linux but not about putting files in to archives. Now a have some time to continue.
Tar.gz
Here are some common way to create your archives.
#Creates simple targetfile.tar without compression. tar cvf targetfile.tar sourcedir/* #Zip everything beneath sourcedir to targetfile.tar.gz tar cvzf targetfile.tar.gz sourcedir/* #Bzip2 everything beneath sourcedir to targetfile.tar.bz2 tar cvjf targetfile.tar.bz2 sourcedir/*
Parameters explanation:
- c or –create create a new archive
- v or –verbose verbosely list files processed
- z or –gzip usage of gzip compression (or also decompression, context dependent)
- j or –bzip2 usage of bzip2 compression
- f or –file use archive file
Alternative with pipe usage:
tar -cf - sourcedir | gzip -c > filename.tar.gz
Zip
Some examples
#Zip every file in current directroy to file.zip. #But hidden files like (.htaccess) are not included. zip file.zip sourcedir/* #also includes hidden files. zip file.zip sourcedir/* .*
The above examples include directories but still not their content recursively, -r option is required.
#Adds all files and directories recursivly. zip file.zip -r /sourcedir/* #Same as abowe with addtional enryption and password lock. #Password is prompted on the terminal. zip file.zip -re /sourcedir/* #Splitts creted archive to parts not bigger than 2 Gigabytes. zip -s 2g -r test.zip ./*
Hope that helps someone.
Happy new year!!!
Jboss 7 setup on debian linux
This is a short step by step explanation of the setup of JBoss 7.0.2 on your Linux (explicit debian). Nowadays there is still no official Debian package for JBoss 7 out there, so we have to do a couple of steps manually. First i describe how to download and to prepare the jboss. Secondly we do some basic configuration that you’ll be needed and at the end i will show you one of the ways to register JBoss as a service.
1. download and prepare.
Start by download currently available version (7.0.2) of the JBoss 7.
#Web Profile version download. wget http://download.jboss.org/jbossas/7.0/jboss-as-7.0.2.Final/jboss-as-web-7.0.2.Final.tar.gz
Extracting files to the final location using tar.
Installing Java 7 on Debian
Here is just an example of how to install java 7 on your linux. I use current Debian and oracle (former sun) java 7. First i had to download the latest java from oracle site and then extrat it. I have to do it because at the moment the is no official debain package for java 7. So we are not able to do it with apt-get as we can it for java 6.
Favorite Eclipse UML Plugin
What is your favorite Free or Open-Source UML Plug-in?
Every year i try some of them and remove them after few hours. As i remember, they where resource-hungry or just bad in reverse engineering
Some weeks ago i tried ObjectAid UML Explorer Class Diagram and liked it. It could quick and easy create simple class Diagrams – just by Drag & Drop. And i had no problems with static constructors or inner classes and other stuff in the code which causes problems to another Plug-ins.
Unfortunately Object Aid Sequence Diagram are not free but cost not much for private usage. Maybe i’ll try it soon.
But first i would ask you what is your favorite Eclipse IDE Plug-in for fast and easy (e.g. partly) revers engineered UML diagrams which can be used to show some architectural details to your colleagues?
Thank you for comments!
Bootcharting
The pictureon the right (klick to enrange) shows how Ubunto boot process is going on my 5 years old Thinkpad T60. Bootchart utility does such charts automatically. If you interestiong how easy it it to enable such bootcharting read below.
Installing bootchart
See how to install bootchart logger on ubuntu, and other linux distributions.
Yo need bootchart and, pybootchartgui
apt-get install bootchart apt-get install pybootchartgui
GIT
I want to share with you some thoughts on GIT because I think that was a right invention to the right time and place.
(This article should be finished half year ago right after i wrote about svn server installation, but unfortunatelly i didn’t find any time to finish it untill now.)
Motivation
My first version control system (VCS) was CVS and i used it with eclipse 2.0 for programming in java. I found CVS quite impressive and liked it a lot. It was also quite reliable and moderatelly fast.
Then someone at the university told us to use SVN, because it has “plenty” of advantages. Somehow i found SVN not bad even if the eclipse svn plugin quality was never quite good. However SVN matured and became powerful source control system and many many people and companies started using it. I think it’s the most used version control system.
I like SVN for easy branching and tagging (with good eclipse plugin support), for global version numbers, for understanding “http://” (with Web-Dav) as well as for more comfortable managing tools and easy installation and configuration.
But that’s all what i like… There is no more practical advantages over CVS and moreover there are even some disadvantages also in comparison to cvs.
- SVN is slow and double slow over HTTP. It may not be critical if you do your changes on several files and them commits ‘em. I’m doing so in my java project and it’s ok. But there could be also other scenarios e.g. if you deal with such “monsters” like magento, performance gain very fast on importance
- Folder movement is a nightmare. With the subversion you have to know what you do when you start move around your folders.
- Ugly .svn folders in the folder tree of your project. O course cvs had them too. But do we really need them? Sometimes i just wanna to copy my project tree without that stuff.
- Not closed connection (don’t know if it is an server or eclipse plugin bug). Sometimes svn commits leave not closed connection. Eclipse hangs.
- SVN consumesa lot of space, more than cvs local and on the server.
- You need to be online if you want to commit.
All of these disadvantages i mentioned above are fixed in GIT. Git is much faster, flexible. So let install it!
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Java EE 5 vs Java EE 6
This post visualizes changes between Java EE Standards 5 and 6. The comparison of standards is listed in four sections Web-Services, Web-Container, Enterprise Application technologies and Maintenance. Hope this helps someone.
Web Service related changes
| Java EE 5 (JSR-244) | Java EE 6 (JSR-316) |
|---|---|
| JAX-RPC 1.1 JSR 101 | JAX-RPC 1.1 |
| Enterprise Web Services 1.2 JSR 109 | Enterprise Web Services 1.3 (new version) |
| Web Service Metadata 1.0 JSR 181 | Web Service Metadata 1.0 |
| Streaming API for XML 1.0 JSR 173 | Streaming API for XML 1.0 |
| JAX-WS 2.0 JSR 224 | JAX-WS 2.2 (new version) |
| JAXB 2.0 JSR 222 | JAXB 2.2 (new version) |
| SOAP with Attachments API for Java (SAAJ) JSR 67 | Java APIs for XML Messaging 1.3 (new version) spec |
| new! JAX-RS 1.1 JSR 311 | |
| new! Java API for XML Registries (JAXR 1.0) JSR 93 |
Subversion on Debian Linux
Today i describe the few steps of installation of subversion (with repository) on Linux (Debian lenny). That description show the installtion proccess in 5 steps. And the configuration of Apache Mod-DAV as additiona information. So let’s start.
Step 1: Install subversion
If subversion is not installed, install it with:
$apt-get install subversion
lsof command (Linux)
Today i’ll give you some interesting examples of using lsof command.
lsof stands for “list open files”. So actually it shows all files used by some processes of a system. That command exist on most of and on different Linuxes and Unixes.
It bases on architecture of a kernel which causes evety procces to hold it used files in /proc – (a virtual file-system). A typical hierarchy wold look like:
/proc/process id/fd/file descriptor
In the absence of any options, lsof lists all open files belonging to all active processes of a system. But that is to much for most cases, because many of cases are networkrelated. An if you consider that sockets are files in linux we can use lsof to search fo them.
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102 Post so far
I noticed that my last post was a 101 post on this blog which is good occasion to do some self evaluation.
I started to write here in January 2007 it’s nearly 4 years ago. You see I’m not very productive blogger. Nevertheless i wrote some interesting things which have attracted some people or comments. Here some of them chronologically:
- First Look at Java Persistence API
- “No follow” considered harmful
- First steps with Magento
- My TOP 10 WordPress Plugins in 2007. I think a have to make new version of it soon.
- I’ve created a word socialolism and was cited on some link aggregaters relatively popular.
- I was on of the first hwo checked some new features of Geni.com and gathered their attention, so they send me a T-shirt
- I’ve made an online calendar of Russian beauties which is unfortunately dessapeared with hosted site. However i have a picture of it cover.
- I wrote about my time with my son as my wive was away. Part one and part two.
- I have introduced new Wordpress Plugin which definitive need next update right now. I know, i know. I have it on my task list.
- In 2008 we discussed school education in germany
- Then many people found interesting my post about duplication of magento installation. I plan to do new relese on this topic.
- And Last but not least I wrote about Software RAID on linux, installations of JBoss and SSH tunels.
I’ve learned pretty much and i tried different themes. I think in the future i will write more and more technical stuff. So e.g. Java comes to short so far also web technologies where not covered while i have to do with them relatively often.
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