Arun's blog

Category: OS

  • Install *.apk to android phone

    It was disappointing that the android devices selling in most of the gulf countries doesnt have market place installed 🙁 – One of the core and major feature of androis is missing. Anyway the softwares available in Android Package file (apk) can be installed by downloading it to the pc using adb eg: to install…

  • Exporting display over ssh

    To export the display from a remote server over ssh: ssh -X user@host Just made sure that, X11 forwarding is enabled on the sshd_config . Once the connection is made, you can make sure the display is exported using: # echo $DISPLAY localhost:10.0 if the value is empty, make sure you have the necessary package…

  • IPv6 configuration for KVM guests

    It is simple and straight forward to enable IPv6 on KVM guests Configure the host machine with IPv6 Address on the bridge interface cat ifcfg-br0 IPV6INIT=yes IPV6ADDR=xxxx.xx::10 IPV6_DEFAULTGW=xxxx.xx::1 IPV6_AUTOCONF=no Configure the interface on virutal machines with ipv6 address cat ifcfg-eth0 IPV6INIT=yes IPV6ADDR=xxxx.xx::11 IPV6_DEFAULTGW=xxxx.xx::1 IPV6_AUTOCONF=no Add the the necessary firewall rules to ip6tables on the host…

  • NAT with port forwarding on Virtual Box

    You can use the host-only-adapter networking, if you require the virtual machine to be accessible only from the host machine. In this case your virtual machine will not have access to anywhere outside the host. Read more about virtual box networking at http://www.virtualbox.org/manual/ch06.html On the other hand NAT enabled interface can communicate with clients outside…

  • Convert KVM images to Virtual Box (VDI)

    The steps to convert KVM images to VirtualBox’s VDI format, ensuring cross-platform compatibility and a smoother transition. VirtualBox’s VDI (Virtual Disk Image) format comes with several advantages, making it a flexible choice for virtualization: Cross-Platform Compatibility: VDI images can run on Linux, macOS, or Windows, making them versatile and accessible. No Need for Virtualization-Enabled Processors:…

  • KVM image on LVM

    Virtualization has transformed the world of computing, offering flexibility, resource optimization, and cost-effectiveness. We’ll explore the process of converting qcow2/raw images to LVM logical volumes, giving you greater control over your virtualization resources. KVM is an excellent choice for virtualization on Linux, and when paired with LVM, it offers even more benefits. LVM allows you…

  • Virtualization with KVM under Redhat Linux, Migrate VMware virtual images to KVM

    KVM (Kernel Based Virtual Machine) stands out as a powerful, open-source solution that seamlessly integrates with Linux. It offers a cost-effective and efficient way to virtualize your systems without the need for additional licensing costs. In this guide, we’ll walk you through the process of installing KVM, migrating VMware virtual machines to KVM, creating bridge…

  • Setting Up IPv6 Tunnels on MAC and Linux

    IPv6, the next generation Internet Protocol, brings a wealth of possibilities to your network, system, and services. In this guide, we’ll walk you through the process of establishing an IPv6 network tunnel on both MAC OS X and Linux. Step 1: Choose an IPv6 Tunnel Broker First, you need to select an IPv6 tunnel broker.…

  • Enable IPv6 on Linux (2010)

    IPv6 is the future of internet addressing, and Linux, with its robust kernel support, makes it remarkably easy to enable IPv6 on your system. In this guide, we’ll explore the process of setting up IPv6 on a Linux system, with a focus on Red Hat Linux. However, the principles and steps discussed here are applicable…

  • Android ADP1 Firmware to CyanogenMod

    This note is more specific to mac os x, more likely the same steps will works with any OS. CyanogenMod is a customized, aftermarket firmware distribution for the HTC Dream and Magic cell phones, and the Google Nexus One. Based on the open-source Android operating system, CyanogenMod is designed to increase performance and reliability over…

  • Streamlining SVN over SSH with Custom Port and Public Key Authentication

    Subversion (SVN) is a tried-and-true version control system that has powered countless software development projects. When using SVN with SSH for secure access, customizing your configuration can simplify your workflow and improve security. In this guide, we’ll explore how to set up SVN over SSH with a custom port number and public key authentication, making…

  • Mysql backup script

    Ensuring data integrity and security is paramount. Regular backups play a crucial role in safeguarding your MySQL databases against unforeseen disasters

  • script to convert OpenSSH keys to Tectia SSH Format

    bash script for converting OpenSSH keys to Tectia format and vice versa.  

  • Setting Up Autoresponders with Postfix Virtual

    One of the options to configure auto responder with Postfix 1. Edit Postfix Virtual Configuration: Open and edit the Postfix virtual configuration file. Add the following line, replacing email_address with the address you want to configure for autoresponding, and email_address@autoreply.nic.net.sa with the destination address for autoresponses: Copy code email_address recepient_lists, email_address@autoreply.nic.net.sa For example: Copy code…

  • Hylafax/FaxMail with unicode encoding

    Dealing with Unicode encoding can be a challenging task. However, it’s crucial for ensuring the accurate transmission of messages. In this blog post, we’ll explore some scripts and techniques that can help you work with Unicode in Hylafax/FaxMail, specifically for incoming HTML and text faxes. HTML Fax Handling: When it comes to processing HTML faxes…