Category: Operating System

Backup and restore your Linux system

  Backup and restore your Linux system There are many ways to backup your linux system, one of the method is to zip/compress all the system file to a tar ball while your linux system is running without any interruption, isnt require any special software unlike windows. 1: Backing-up backup every single file on a …

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Installing an SSL Certificate in Apache

Transmission of your login  information over an unsecured connection can be intercepted and hacked. SSL certificates  encrypt the login data before transmitting them to your ISP/server  making it harder for eavesdroppers to break in. That’s exactly why banks,  financial institutions, ecommerce sites etc. use SSL for securing login  information, user identity information and credit card …

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Ubuntu 12.04 server is finally up and running :)

Today, my Ubuntu 12.04 server is finally up and running but, still need a bit of fine tune and some important daemon to add.

Terminal command for querying the battery percentage in Mac

Terminal command for querying the battery percentage in Mac Recently after upgraded my Snow Leopard to Lion OSX, my bluetooth no longer showing the correct battery percentage any more. It just stays at 100% even though your batteries are dead flat.   Hence the below is the terminal command for querying the battery percentage in …

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IOS5 Upgrade error “Unknown Error -23″

Hi All A lot of people on IOS seems having problem to upgrade to iOS5 having issue, one common “Unknown Error -23″. it is possible of corrupted IOS downloaded, solution which is to update it manually. 1. Download the iOS5 manually. See iOS 5 Now Available: iPhone 4 GSM http://appldnld.apple.com/iPhone4/041-8358.20111012.FFc34/iPhone3,1_5.0_9A334_Restore.ipsw 2  For Mac users, copy the iOS5 file to “~/Library/iTunes/iPhone Software Updates“. …

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Setup a PXE environment at home to install Ubuntu 10.10 on client without CD-rom/Floppy

Setup a PXE environment at home to install Ubuntu 10.10 on client without CD-rom/Floppy Things you need: 1/ DHCP Server (Existing home router) 2/ TFTP Server (from Ubuntu 10.10) Steps 1/ Existing ubuntu run the following: sudo apt-get install tftpd-hpa tftp-hpa xinetd   3/ Copy unbuntu boot file to tftp path:   If you have …

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Root Viewsonic Viewpad 7

Disclaimer: Proceed at your own risk. I’m not responsible if your device gets bricked or damaged during the process. Prerequisite 1. You need to have working USB connection between your computer and Viewpad 7. If you have installed “PC Tools” software that shipped with your ViewPad 7, that should have installed the necessary drivers. Alternatively, …

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Multiple LAN subnets/VLAN (WRT54GL – Tomato firmware)

Router Setup Access the router through ssh or telnet. On Windows you can use Putty. On unix you can use the Terminal. In the router console, type the following command: nvram show | grep vlan.ports   If you get the following output you are ready to proceed:   vlan0ports=3 2 1 0 5* vlan1ports=4 5 …

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Wiping hard drive clean in linux

Two good methods of “clearing” your hard drive are: With a Ubuntu or Live CD and in a terminal do this: sudo dd if=/dev/zero of=/dev/XdY or sudo dd if=/dev/random of=/dev/XdY where XdY is the drive, i.e. sda, sdb, or hda, hdb, etc.