How to DHCP server on Ubuntu

$ sudo apt-get install dhcp3-serverNow edit the /etc/dhcp3/dhcp3d.conf
The default config file supplied with the dhcpd package is some what cumbersome. I replaced it with the following simple file# dhcpd.conf config file.authoritative;subnet 192.168.0.0 netmask 255.255.255.0 {range 192.168.0.20 192.168.0.250;option domain-name "mynet.local";option domain-name-servers 192.168.0.1;option

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How to beat proxy using ssh

In most of our schools and offices several websites are blocked. Most of these offices and schools are using a proxy server such as squid along with squidguard or danceguardian to achieve access restrictions on users. Most often, the sys admins forget to block internet traffic using other protocols such as ssh , ftp etc. You can beat the web filtering scheme of your network administrator if you

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How to update a distro's iso to new one with zsync

zsync is a file transfer program. It allows you to download a file from a remote server, where you have a copy of an older version of the file on your computer already. zsync downloads only the new parts of the file. It uses the same algorithm as rsync. However, where rsync is designed for synchronising data from one computer to another within an organisation, zsync is designed for file

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How to Rebuild a deb package from an installation

If you have an ubuntu/debian system , you can rebuild the deb file of any installed package. For this install the dpkg-repack package.# apt-get install dpkg-repackSuppose you have aspell installed on you system . Rebuild the package as below.# dpkg-repack aspellNow look at your current directory. You will seeaspell_0.60.6-1_i386.debdpkg-repack will work only as root.

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[ How to ] Automatically unlock the gnome keyring

Installing the Package
We’ll need one tiny package for this to be supported. Using your favorite package manager install libpam-keyring, or use the following command:
sudo aptitude install libpam-keyring
Configuring PAM
Once this is installed we need to add a few lines to a configuration file. Follow this next step carefully. If you put the line in the wrong place it may cause problems with

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[How to] boot from Linux ISO FILE using Grub 2

Edit /etc/grub.d/40_custom and add the below entry

menuentry "Karmic Live CD (sdaX)" {
loopback loop (hd0,X)/my-ISO/ubuntu-9.10-desktop-i386.
iso
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=/my-ISO/ubuntu-9.10-desktop-i386.iso
initrd (loop)/casper/initrd.lz
}

The above entry assumes that ubuntu-9.10-desktop-i386.iso is put in sdaX/my-ISO/

After making the entry run
sudo

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[How to ] enable 3D effects in fedora 12 ( constantine ) on a system having ATI graphics card

Fedora 12 provides "out of the box" support for kernel mode-setting with ATI R600/700 series graphics hardware, but it does not provide 3D acceleration by default. However, Red Hat's X developers have made it very easy to enable this 3D support for the ATI Radeon HD 2000, 3000, and 4000 series hardware by just installing a special Mesa package from yum.
To enable the open-source R600/700 3D

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How to change gnome keyring password

Install gnome-keyring-manager. Run it and there will be a "local password for user root." Change that and it will change your keyring password.





Quick and dirty method 
----------------------------


Delete the keyring Data file


Code:rm ~/.gnome2/keyrings/default.keyringor backup:
Code:mv ~/.gnome2/keyrings/default.keyring ~/.gnome2/keyrings/default.keyring.bak

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[ How to ] Linux Encrypted DVD

Suggested Reading 


http://icewalkerz.blogspot.com/2009/10/how-to-create-encrypted-partition-local.html




Create an empty DVD image. The size of the image depends on the media you use (the one in the example works for DVD-R)


dd if=/dev/zero of=dvd.img bs=1000000 count=4700



Mount the image on a loopback device and prepare it for further use with LUKS:


losetup /dev/loop0 dvd.img  

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How to install Moblin Desktop environment on Fedora 12

Moblin is a lightweight Linux desktop environment especially suited for small form computers (netbooks et al).Installation is straightforward.


Using the command lineOpen a terminal (shell).
Install the Moblin group: su -c 'yum install @moblin-desktop'

Using the graphical package managerGo to System > Administration > Add/Remove Software.
Note: the name of the Add/Remove Software application

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How to install Chrome browser on Fedora

Chrome is a browser revolution from Google. It’s built from scratch by Google and has all new features and some innovative ones. Although Google has not yet officially released a Chrome browser that works on Linux, we had shared with you a few ways in which you could possibly install Chromium (the base on which Google have built the Chrome browser) on your

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How to : Time Synchronisation with NTP

ntpdateUbuntu comes with ntpdate as standard, and will run it once at boot time to set up your time according to Ubuntu's NTP server. However, a server's clock is likely to drift considerably between reboots, so it makes sense to correct the time ocassionally. The easiest way to do this is to get cron to run ntpdate every day. With your favourite editor, as root, create a file /etc/cron.daily/

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[ How to ] solve laptop's ACPI related problems in Ubuntu (9.10)

Laptop fan runs constantly under Ubuntu 9.10

Open a terminal
sudo nano /etc/default/grubFind and Edit the following line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Add acpi_osi=Linux to the end so it looks like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"
Exit Nano editor with Ctrl+X.  Answer "yes" when asked to save the file
Update grub: 
sudo update-grubReboot to make

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HOW TO increase available space of your partitions - tune2fs

You have probably noticed that when you start your 'System Monitor' (System>Administration>System Monitor) there's a difference between free and available space. Reason for this is the fact that 5% of your partition is reserved for root so if the disk gets full you can boot to recovery mode and have enough room to move around. The thing is that you don't need more than 50MB for this so 5% of

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How to Setup Transparent Squid Proxy Server in Ubuntu

Squid is a fully-featured HTTP/1.0 proxy which is almost (but not quite – we’re getting there!) HTTP/1.1 compliant. Squid offers a rich access control, authorization and logging environment to develop web proxy and content serving applications. This is a short guide on how to set up a transparent squid proxy server. Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It

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[How to ] Kill the System Beep

System > Preferences > Sound > uncheck "Play alert sounds"

You can try a reboot now .. but. Disabling the PC speaker, in favor of using external speakers, can be more tricky.

Try by opening:-

1.sudo nano /etc/modprobe.d/blacklist.conf
.. and appending the lines:-

1.blacklist pcspkr2.blacklist snd_pcsp
Reboot your Ubuntu PC.

If that doesn't cut it, open:-

1.sudo nano /etc/modprobe.d/

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Remastersys for Ubuntu 9.10 ( Karmic Koala )

Remastersys 2.0.13 released for Ubuntu 9.10 Karmic

There is a new repository as well.

For Karmic and Newer with grub2 - version 2.0.13-1 and up

# Remastersys
deb http://www.geekconnection.org/remastersys/repository karmic/


The webpage has also been updated:

http://www.geekconnection.org/remastersys/ubuntu.html

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[ How to ] open Corel Draw files ( .cdr ) in Linux

sK1 illustration program

sK1 is an open-source illustration program that can substitute professional proprietary software like Corel Draw or Adobe Illustrator*. Currently Linux is our main development platform, but porting on Win32 and MacOS X desktops has been scheduled. sK1 supports professional publishing features, such as CMYK color, separations, ICC color management and press-ready PDF

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[ How to ] mark or highlight lines or important points in pdf files

XournalXournal is a GTK+ application for notetaking, sketching and keeping a journal using a stylus. It can also be used to add annotations to PDF files.
Xournal uses the gtk-print architecture for printing. Xournal also includes a native PDF printing feature.
Xournal includes a PDF file parser compatible with PDF format version 1.4; the compression features of PDF 1.5 are not supported. When

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Philosophy of free software (Video) by Richard Stallman

Download video of Richard Stallman in 2009 FLISOL - hereThe video lasts 28 minutes and this format ogv (free technology for video compression)

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Things to do after installing Ubuntu Linux 9.10 Karmic Koala

So you've just installed Ubuntu 9.10, the cute and cuddly Karmic Koala, but now you're confronted with a most pertinent question, "What do i do now?" Ubuntu is a very complete and full-featured Linux distribution, but no operating system can come with everything you want. There's much more fun to be had in what comes after installing the OS on your machine: now you get to set it up with all the

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Changing the Plymouth Theme in Fedora 11 Leonidas

Plymouth is the new graphical boot system introduced with the release of Fedora 10 Cambridge. It replaced the rhgb (RedHat Graphical Boot) with a snazzier boot screen that supported cool animations. The first version of Plymouth that shipped with Cambridge used a plugin system where each graphical boot animation had to be coded from scratch - something that did not encourage many people to create

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How to change DMA settings

One really common solution to slow, and unreliable playback of DVD is the settings related to DMA which is turn "off" by default.

DMA stands for: Direct Memory Access. DMA allows a piece of hardware to talk directly with the RAM, reading and/or writing independent of the CPU (Central Processing Unit). In other words the hardware can use the system memory, bypassing the CPU, allowing the device

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