In our last article, we have explained how to install kernel headers in CentOS 7. Kernel Headers contain the C header files for the Linux kernel, which offers the various function and structure definitions required when compiling any code that interfaces with the kernel, such as kernel modules or device drivers and some user programs.
It is very important to note that the kernel headers package you install should match with the currently installed kernel version on your system. If your kernel version ships with the default distribution installation or you have upgraded your Kernel using dpkg or apt package manager from the Ubuntu or Debian base repositories, then you must install matching kernel headers using package manager only. And if you’ve compiled kernel from sources, you must also install kernel headers from sources.
In this article, we will explain how to install Kernel Headers in Ubuntu and Debian Linux distributions using default package manager.
![Linux Linux](/uploads/1/2/6/1/126160652/698705727.png)
Install Kernel Headers in Ubuntu and Debian
First check your installed kernel version as well as kernel header package that matches your kernel version using following commands.
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On Debian, Ubuntu and their derivatives, all kernel header files can be found under /usr/src directory. You can check if the matching kernel headers for your kernel version are already installed on your system using the following command.
Check Kernel Headers in Ubuntu
From the above output, it’s clear that the matching kernel header directory doesn’t exist, meaning the package is not yet installed.
Before you can install the appropriate kernel headers, update your packages index, in order to grab information about the latest package releases, using the following command.
Then run the following command that follows to install the Linux Kernel headers package for your kernel version.
Next, check if the matching kernel headers have been installed on your system using the following command
Verify Installed Kernel Headers in Ubuntu
That’s all! In this article, we have explained how to install kernel headers in Ubuntu and Debian Linux and other distributions in the Debian family tree.
Always keep in mind that to compile a kernel module, you will need the Linux kernel headers. If you have any quires, or thoughts to share, use the comment form below to reach us.
How do I install Java and C/C++ integrated development environment called Eclipse under Debian GNU/Linux squeeze v6.xx?Eclipse is a multi-language software development environment. It is written mostly in Java. It can be used to develop applications in Java and, other programming languages including Ada, C, C++, and much more. Development environments include the Eclipse Java development tools (JDT) for Java and Scala, Eclipse CDT for C/C++ and Eclipse PDT for PHP, among others. You need to install the following packages:
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[a] sun-java6-jdk and sun-java6-jre – Sun Java SDK and runtime environment.
[b] eclipse-jdt – Eclipse Java development tools (JDT).
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[c] eclipse-cdt – C/C++ development tools for Eclipse IDE.
[d] eclipse – Extensible tool platform and Java IDE.
[e] gcc c and c++ – GNU/c and c++ compiler collection.
![Dev C++ Debian Install Dev C++ Debian Install](/uploads/1/2/6/1/126160652/271821746.png)
Sun JDK installation
Open a terminal and login as a root user using sudo -s or su - command. Type the following command to install Sun JAVA SDK:
Type the following command to configure and set Sun JDK as default java:
Or use the following command:
Sample outputs:
Verify your new settings, enter:
Sample outputs:
$ sudo apt-get install sun-java6-jdk sun-java6-jre sun-java6-bin
Type the following command to configure and set Sun JDK as default java:
$ sudo update-java-alternatives -s java-6-sun
Or use the following command:
$ sudo update-alternatives --config java
Sample outputs:
Verify your new settings, enter:
$ java -version
Sample outputs:
Type the following commands to set up JAVA_HOME and PATH variables for your setup:
Eclipse IDE installation
Open a terminal and login as a root user using sudo -s or su - command. Type the following command to install Eclipse IDE for Java and C/C++:
Sample outputs:
$ sudo sudo apt-get install eclipse eclipse-jdt eclipse-cdt
Sample outputs:
Use Eclipse IDE
Type the following command
Or visit the following Gnome menu options:
$ eclipse &
Or visit the following Gnome menu options:
Applications > Programming > eclipse
Putting it all together: HelloWorld
First, you need to choose a workspace folder:
Next, you will see the default splash and welcome screen as follows:
You need to create a project to put all your java and related project files. Click on the File >New > Select Java Project:
Set project name to HelloWorld and click on the Next >Finish button:
You need to create a new class called HelloWorld with main(). Click on the File >New Class > Set class name to HelloWorld > make sure you select the checkbox public static void main(String[] args) to create the main() method > click the Finish button:
Add the following code inside main() method:
Save the file by pressing CTRL-s. To run your program just click the Run HelloWorld button:
This faq and sample JAVA app concludes brief walkthrough of the new Eclipse JAVA IDE installation and configuration under Debian GNU/Linux operating systems.
A note about creating c/c++ project
First, make sure GNU/gcc c and c++ compiler collection is installed and working for your setup. To create a c or c++ project – visit File > Project > Select either c or c++ > click the Next button:
Set the project name to HelloWorldCPP > Select Empty project > Click the Finish button
Add a new src file called HelloWorld by visiting File > New > Source file > Set source file name to HelloWorldCPP.cpp > click the Finish button:
Add the following sample C++ code
Save the program. To run click on the run 'HelloworldCPP' button:
The sample C++ app concludes brief walkthrough of the new Eclipse C/C++ IDE installation and configuration under Debian GNU/Linux operating systems.
See also
Debian Install Kde
- Eclipse foundation home page.
- man pages - apt-get, apt-cache, and sudo
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