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Importing an existing SSL key/certificate pair into a Java keystore. I'm writing this blog post in case anyone else has to Google that.

Importing an existing SSL key/certificate pair into a Java keystore

In Java 6 keytool has been improved so that it now becomes possible to import an existing key and certificate (say one you generated outside of the Java world) into a keystore. You need: Java 6 and openssl. 1. Suppose you have a certificate and key in PEM format. Cleaning up Ubuntu 14.10,14.04,13.10 system. Sponsored Link.

Cleaning up Ubuntu 14.10,14.04,13.10 system

How to build pidgin-sipe plugin with audio and video support on ubuntu/linux mint. 25 Useful Basic Commands of APT-GET and APT-CACHE for Package Management. This article explains how quickly you can learn to install, remove, update and search software packages using apt-get and apt-cache commands from the command line. This article provides some useful commands that will help you to handle package management in Debian/Ubuntu based systems. What is apt-get? The apt-get utility is a powerful and free package management command line program, that is used to work with Ubuntu’s APT (Advanced Packaging Tool) library to perform installation of new software packages, removing existing software packages, upgrading of existing software packages and even used to upgrading the entire operating system.

Installation - Setup and install IntelliJ with JDK. Increase "Open Files Limit". Solution for "Too many open files (24)" If you are getting error “Too many open files (24)” then your application/command/script is hitting max open file limit allowed by linux.

Increase "Open Files Limit". Solution for "Too many open files (24)"

You need to increase open file limit as below: Increase limit Per-User Limit Open file: /etc/security/limits.conf Paste following towards end: * hard nofile 500000 * soft nofile 500000 root hard nofile 500000 root soft nofile 500000. GlamHACKER: Missing menu icons in Eclipse (GNOME) Recently, I noticed that Eclipse (and other programs as well) is missing icons from menu items.

glamHACKER: Missing menu icons in Eclipse (GNOME)

Following screenshot best describes the problem: Firstly, I though that this was Eclipse related problem, but since other windows are missing icons too, GNOME was to blame. With a little help of Google, I found an easy working solution. How To Create a SSL Certificate on Apache for Ubuntu 14.04. How To Get A Complete GNOME 3 Desktop In Ubuntu 12.10, Without Installing Ubuntu GNOME Remix. If you're using Ubuntu 12.10 with Unity or some other desktop environment and want to switch to a complete GNOME 3 desktop experience without installing Ubuntu GNOME Remix 12.10, you can do this by simply installing a few packages.

How To Get A Complete GNOME 3 Desktop In Ubuntu 12.10, Without Installing Ubuntu GNOME Remix

Using the instructions below, you won't just install GNOME Shell, but also the default settings and applications that come with Ubuntu GNOME Remix. There are also some optional steps to install the GNOME 3 applications which are missing from Ubuntu GNOME Remix. No, the command in the header won't work, but you'll get a complete GNOME 3 experience in Ubuntu 12.10 by following the steps below. Microsoft Lync on Linux. Update: This post still gets a lot of search traffic hits, but is now over a year old, and I no longer have a need to use lync, so haven't needed to keep this working.

Microsoft Lync on Linux

I believe that the ubuntu repos now contain new enough versions of SIPE that the deb mentioned here shouldn't be needed anymore, but that the rest of the instructions should still be valid. Recently at work we have started using Lync internally. Whilst this is great for the Windows and Mac users among us, not so much for those of us running on linux. However, it turns out that it is possible to get basic lync support working quite easily. I can see people, talk to people, people can talk to me – I can send files to people, but people can't send file to me. PostfixBasicSetupHowto. This document will teach you how to set up a basic Postfix mail server with IMAP and POP3 services.

PostfixBasicSetupHowto

It does not included advanced topics such as integrating virus-checking and spam-filtering, which are dealt with in PostfixVirtualMailBoxClamSmtpHowto and PostfixCompleteVirtualMailSystemHowto. In our setup, Postfix sends and receives mail from Internet and stores them in the user mailboxes while clients on the Internet can retrieve their mails via Courier IMAP or POP3. Setup a Local Test Mail Server with Ubuntu Linux. Setting Global Environment Variables in CentOS. April 16, 2009 – 6:52 pm The easiest way to set an environment variable in CentOS is to use export as in $> export JAVA_HOME=/usr/java/jdk.1.5.0_12$> export PATH=$PATH:$JAVA_HOME.

Setting Global Environment Variables in CentOS

How to Install Linux, Apache, MySQL, PHP (LAMP) stack on CentOS 6. About LAMP LAMP stack is a group of open source software used to get web servers up and running.

How to Install Linux, Apache, MySQL, PHP (LAMP) stack on CentOS 6

The acronym stands for Linux, Apache, MySQL, and PHP. Since the server is already running CentOS, the linux part is taken care of. Installing Apache, MySQL, PHP, PHPMyAdmin on CentOS 6 with PHP Memcache for Drupal 6 Memcache API. Login to Centos server as root user Using command prompt check whether you are logged in as root user or not.

Installing Apache, MySQL, PHP, PHPMyAdmin on CentOS 6 with PHP Memcache for Drupal 6 Memcache API

If you are not logged in as root user, you will not be able to run any installation commands. su – The above command will ask you for root password if you are not logged in as root user, else if you are logged in as root user than it will not display any message. Ubuntu Cleanup. You have installed a lot of applications, uninstalled them. A lot of times when you apt-get remove all those dependencies stay behind. There are a lot that think aptitude is the answer but I have found that when you aptitude remove an application it removes stuff you don't want removed. Ubuntu has a few methods that will free up disc space and make your OS lean and fast.

First thing first there is a few commands that can clean up your disc. Ubuntu 12.04 – install sun jdk 6-7. Apr 30 2012 Ubuntu GNU/Linux 12.04 LTS (Precise Pangolin) released. How to setup FTP Server virtual users vsftpd Linux Ubuntu 10.04 LTS Debian. This guide shows how to setup an FTP server with virtual users, that is, only one account to handle all users. This is done by creating an FTP admin account which handles all user accounts created in a MySQL database This eliminates user accounts on the Server for better performance and security.

The guide is divided into two parts. A step by step guide and two bash scripts which does the job for you; The first is a script which handles the installation and setup the VSFTPD FTP Server with virtual users. The second script adds new FTP virtual users and their corresponding home directory. Configure apache to use virtual hosts on ubuntu server - LinodeWiki. Oracle (Sun) Java JRE for Ubuntu, Linux Mint and Debian - Easy Linux tips project. How to set NOMODESET and other kernel boot options in grub2. Ubuntu VPN Connection for Dummies.