Archive for the 'Linux' Category

Ignoring versioned files with GIT

Suppose you work in a team. You download the project sources and you need to change some configurations according to your working environment, like the tcp port on which to run the webserver or the path where to store the log files. If you commit those files, after your local set up, this would impact […]

Ssh “Write failed: Broken pipe”

I started to get this error “Write failed: Broken pipe” when I was leaving the terminal alone. Since plumbers are still expensive, despite the crisis, I decided to fix the pipe by myself. Very easy, just add the following line to /etc/ssh/sshd_config: ClientAliveInterval 60 This will send a “keep-alive” packet from the server to the […]

Self executing jar files

I personally always felt bad about the fact that we have to provide a shell script which runs the executable jar file. It would be nice if we could provide a self contained executable in a single file, right? I just discovered a trick which works on unix, but it can possibly be adapted on […]

Being a Unix user (Linux/OSX) I need sometime to run some Windows utility in a Virtual Machine. But I don’t want to break the virtual machine, installing and uninstalling things, or accidentally, or by the wast hordes of viruses and malwares that infestate Windows. So, here I found how to do it: How to discard […]

SSH Bash Completion

Today I was having a look on how the git-completition is implemented. If you have not enabled the completition for git, I think you should really read my article on how to do it. So I found this two links, that explain the basics on how to implement bash completion for simple commands: An introduction […]

Are you habit to have some configuration files packaged inside the jar of your application? If so, you can still have a look at those configuration files in the running environment using the unzip Unix utility. $ unzip -p /opt/myapp/lib/my-app.jar log4j.rootLogger=INFO,stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Threshold=INFO log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{dd-MMM hh:mm} [%-5p] %m%n The -p option uncompress and prints […]

Creating a statically linked version of a unix software saves you in all the circumstances where you can’t install the software as root, when you don’t have development tools on the target machine, when you cannot find a prepackaged version for the specific server, when the libraries available on a server are conflicting with the […]

There are a couple of cool features in GIT that may not be well known by everyone, depending on which platform you are using. For example on Linux it is quite common to have the bash completion working, while in Windows msysgit comes with a cool prompt which displays the current branch and some status […]

If you are working with the Android Development Toolkit (ADT) for Eclipse you may have noticed that the sources for android.jar are missing. The Android SDK comes without the sources, and even if you manage to download the source code for the Android library, the ADT does not allow you to attach the sources to […]

If you have more than one laptop/computer on your desktop, you may find yourself jumping from a keyboard to another to make use of them. In this article I explain how I configured my laptops to share keyboard and mouse using synergy. It is always a good thing to have a second monitor, for example […]


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