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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
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How to set grub menu password so that no one can change your password through recovery mode option in an ubuntu.it is very important for security reasons. i am going to show you how it can be done.The steps are given below to set grub menu password in an ubuntu.
1.first gain the root privilages by typing
you will be asked for password give it
2.By default root doesn't have a password ,so first set the root password by going to the termina...
many of us on a college campus or office network access the internet through a proxy server .how do you set the proxy server details in your shell environment?you can set the proxy for different protocolsas follows-
$ export http_proxy="http://192.168.0.1:3128";//http proxy
$export ftp_proxy="192.168.0.1:3128";//ftp proxy
you can add your proxy server ip sddress instead of 192.168.0.1 and your port numbers
1. you can obtain your original mac address by going to the terminal and type the
eth0 Link encap:EthernetHWaddr 00:1C:23:FB:37:22
now lets change the last part of the mac id forom 22 to 23
$ifconfig eth0 hw ether 00:1c:23:FB:37:23
now type again
you will get