Why Search Engine Optimization (SEO) Matters?

If you aren't yet aware of its meaning, SEO stands for Search Engine Optimization. Simple enough, but just what is SEO and what is it for? This is a more complex matter.

Search engine optimization refers to a number of different techniques used for building websites and the content on these sites to improve their placident in the search engine results pages.

The idea of SEO is to make your website more visible to web users who search for content with search engines (which is essentially everyone who uses the World Wide Web at all).

If your website is a personal page meant primarily for yourself and perhaps a small number of family members and friends, it may not be all that important to you to have a site which is optimized.

However, if your website is business oriented, it matters a great deal.

Think of it this way: if your business decided to stop being listed in the phone book, took the signs and awnings down and stopped advertising, how successful would you be at attracting new business?

Search engines have for many largely replaced the function once performed by local phone directories.

In order to attract (and even retain) business, you need to have a high profile where your customers are likely to see you - and these days, this place is online.

It once was that if people couldn't find you in the phone book, your business was in serious trouble. Now, of course the question is how easy it is for people to find your website.

You may have a great looking website and even use the URL in your printed marketing materials and advertising campaigns; but not everyone is going to see your advertisident in the paper.

People tend to look at web sites when they're actually in need of something and even if a potential customer has seen your ads, it's not at all certain they'll remember to go to your site immediately when they're looking for what you offer.

Instead, your potential customers are using search engines - which is why your business may need some help from a professional SEO consultant to ensure that consumers will find you when they really are looking for you.

One of the things we should look at first here is what the search engines actually see when their crawlers come to your site.

The search engines don't know (or care) about your site's design in terms of graphics (though they will read the alternate text for these images - if you don't know about this important elident of web design, an SEO consultant can help you with this).

VNC Howto Configure

What is VNCserver?

VNC stands for Virtual Network Computing. It was originally developed by AT&T as a way to administer machines without using the console. If you have used Windows Terminal Services (RDP), VNC will seem very familiar.

Why use VNCserver?

In Linux, everything can be done from a shell. However, there may be a time when you need to access the machine as if you were at the console.

Getting Started

You will need several things to get started:

• root privledges


• VNC client software (tightVNC, you can download it here.)


• A good password!

As I mentioned above, this example is done with RHEL, which comes standard with VNCserver installed. To start the vncserver simply invoke the following commands:

[root@roswell etc]# service vncserver start

Starting VNC server: [ OK ]

[root@roswell etc]#

[root@roswell etc]# vncpasswd

Password:

Verify:

[root@roswell etc]#

[root@roswell etc]# vncserver

New 'roswell:1 (root)' desktop is roswell:1 Starting applications specified in /root/.vnc/xstartup Log file is /root/.vnc/roswell:1.log

So what did we do there? First, we started the vncserver service. It may or may not have already been running on your system. Next we set a password to access the VNC desktop. When you set the password, you will not see any characters on the screen, and you must enter the password twice. You will only need to do this the very first time you run vncserver. The password will be saved in the Linux filesystem, and you can change it at any time by invoking the vncpasswd command again. Last, to activate the VNC desktop, we simply invoked the vncserver command. Notice the output; the desktop is named "roswell:1" which can also be replaced via the machines IP address.

Connecting

Assuming you already installed TightVNC or another VNC client, enter the desktop name:

You can replace the server name with an IP address if you are logging in from outside your LAN. Remember, if you are using NAT port 5900 must be forwarded to your VNCserver.

Upon successful connection, you will be prompted for a password. You will then see a terminal screen that will allow you to execute commands:

VNCserver in Runlevel 5 (KDE or Gnome)

If you are new to linux, running VNC server with a terminal isn't going to do you much good. You might want to have a menu-driven GUI like Windows. No problem. Follow these steps: First, we are going to assume that VNCserver is running under the root user, as shown with the example above. For this example, I will be editing my VNCserver to enter Gnome. You can specify a KDE desktop if you have KDE installed on your server. Make sure you are in the root directory.

[root@roswell ~]# cd ~/.vnc

[root@roswell .vnc]# ls
passwd         roswell:1.pid  roswell.area51.lan:1.pid
roswell:1.log  roswell.area51.lan:2.log
xstartup
[root@roswell .vnc]# vi xstartup

Using vi (vim) to edit the xstartup file, make sure your file matches this one:

#!/bin/sh

# Uncomment the following two lines for normal desktop:
 unset SESSION_MANAGER
 exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
startx &

Notice that the last line is "startx &" as this command will launch Gnome upon login via VNCserver. If you are using a KDE desktop, the line "startkde &" should replace the last line.

Logging in, you will be presented with a Gnome or KDE desktop.

Rsync To Transfer File under Linux

What could be achieved from the Document?

• Transferring Files on Linux Platform (Tested with 1.5 TB of Data).
  
• Admin Required to take Incremental Backups.
  
• Want to keep Files Synced.
  

Tested on Fedora/Centos Linux Platforms (But Surely it works on all Distros)
Before Starting you should have xinetd working on your Linux Distro

Or get the Xinetd for your distro from
RPM.pbone
RPM.pbone1

Read More About Xinetd
XINETD

Now Lets Start .

What is Rsync ?

Rsync is a free software computer program for Unix and Linux like systems which synchronizes files and directories from one location to another while minimizing data transfer using delta encoding when appropriate. An important feature of rsync not found in most similar programs/protocols is that the mirroring takes place with only one transmission in each direction.

Installing Rsync

How do I install Rsync?

Use one of the following commands to install Rsync.

If you are using Debian Based like Ubuntu Linux, Execute the following command

# apt-get install rsync
OR
$ sudo apt-get install rsync

If you are using Red Hat Enterprise Linux (RHEL) type the following command

# up2date rsync

If you are using CentOS/Fedora Core Linux, type the following command

# yum install rsync

Always use Rsync over ssh

Since Rsync does not provide any security while Transferring data it is recommended that you use rsync over ssh . This allows a secure remote connection.

You Can Find Some Good Example Here
Rsync Examples

Setting Up Rsync Server

You Need to Create or Edit Three File which would make you start Rsync server

1. /etc/rsyncd.conf
   
2. /etc/rsyncd.secrets
   
3. /etc/xinet.d/rsync
   

Lets Get in Details of all this 3 files
1. Rsyncd.conf

max connections = 5
log file = /var/log/rsync.log
timeout = 300

[backup]
comment = Anything You would like to Notify
path = /your/real/path/to_the_directory
read only = yes
list = yes
uid = root
gid = root
use chroot = no
auth users = pub
secrets file = /etc/rsyncd.secrets


The above Files say maximum connection to the server will be 2, log file to write for debugging and information about the process, timeout is set to be 300
The Next [backup] tells what should be the canonical name to the directory we have shared in the above case it is given by "path = /your/real/path/to_the_directory" (It is Similar to Samba if you have Used)
read only = yes Permission to the Directory Shared is Given Read
auth users = pub Only this user have the permission to view the directory.
secrets file = /etc/rsyncd.secrets contains the usernames and passwords

2. Rsyncd.secrets
Contains the Usernames and Passwords colon " : " seperated
pub:pub

Now the Super daemon Xinetd need to handle the Rsync daemon so

# default: off
# description: The rsync server is a good addition to an ftp server, as it \
# allows crc checksumming etc.
service rsync
{
disable = no
socket_type = stream
wait = no
user = root
server = /usr/bin/rsync
server_args = --daemon
log_on_failure += USERID
}

Just Copy the Above code where disable should be no.
Restart Xinetd
/etc/init.d/xinetd restart

Hoooraaayyyy We have setup the server now Check it from any remote machine having rsync.

rsync rsync://pub@ipaddr

where pub = username in the rsyncd.conf with the password specified in rsyncd.secrets

Note : rsyncd.secrets file should have only read permission from root.

You Should get the listing here.

Reveal You Hard Disk Information from Command line

Want to know the Which Make, serial No, Model is your harddisk no need to open your system there are handy command line tools which can help you retrieve Disk Information

# smartctl -i /dev/sda

smartctl version 5.38 [i386-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen

Home page is http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===

Model Family: Seagate Barracuda 7200.10 family

Device Model: ST3160215AS

Serial Number: 6RA3TSBV

Firmware Version: 3.AAD

User Capacity: 160,040,803,840 bytes

Device is: In smartctl database [for details use: -P show]

ATA Version is: 7

ATA Standard is: Exact ATA specification draft version not indicated

Local Time is: Wed Aug 19 12:38:14 2009 IST

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

METHOD 2

# ls /dev/disk/by-id

ata-ST3160215AS_6RA3TSBV ata-ST3160215AS_6RA3TSBV-part5 scsi-SATA_ST3160215AS_6RA3TSBV scsi-SATA_ST3160215AS_6RA3TSBV-part5

Where ST3160215AS is Model Number and 6RA3TSBV is the serial No.

# hdparm -i /dev/sda

/dev/sda:

Model=ST3160215AS , FwRev=3.AAD , SerialNo= 6RA3TSBV

Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }

RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4

BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=?16?

CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=312579695

IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}

PIO modes: pio0 pio1 pio2 pio3 pio4

DMA modes: mdma0 mdma1 mdma2

UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6

AdvancedPM=no WriteCache=enabled

Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

Note : HDPARM will give you many details please check the man page for details

There are other tools but to use them you need to install them.

1. hwtools

$ hwinfo --disk
...
Model:     "ST3160215AS"
Device:    "ST3160215AS"
Revision:  "3.AAD"
Serial ID: "6RA3TSBV"

Installing fonts on Linux

Are you a Graphic Designer or do lot of Graphic publishing work on GIMP (Gnu Image Manipulation Program) or any other program you would want many fonts to play with them.

It is surely and not difficult to install fonts on Linux Platform, you can say its as easy as installing on windows. It will take not more than 2-5 minutes if you just follow the below instructions. We are going to install TTF ( true type fonts ) on the system per user and global basis.

Obviously the best method and handy method in Linux is doing it from command line.

First search for the fonts you want to install on the system. Google out you will get a ocean of sites. Check it if you like download the font to your local system.

We'll start of the installation with Per User Installation

In this type of installation only the user who is targeted has the access to the fonts.

Steps

1. Download the Fonts to local system.

2. mkdir ~/.fonts (where ~ is the home directory of the user)

3. mv *ttf *TTF ~/.fonts

Thats it Now log out of your desktop environment and log back in. Check the fonts in GIMP or Openoffice applications

Global Installation

Installing fonts globally allows all users access to the fonts. This is not as simple as installing per-user but it is still simple. You sill have to download all of your fonts. Once you have them downloaded unzip the files (making sure all the *ttf and *TTF files are in the same directory) and su to the root user. Once you are the root user issue the following commands:

• 
  

  mkdir   -p /usr/local/share/fonts/ttfonts

  
  


• 
  

  mv *ttf *TTF /usr/local/share/fonts/ttfonts

  
  


• 
  

  cd   /usr/local/share/fonts/ttfonts

  
  


• 
  

  ttmkfdir   -o fonts.scale

  
  


• 
  

  mkfontdir

  
  


• 
  

  chkfontpath   –add /usr/local/share/fonts/ttfonts

  
  


• /etc/rc.d/init.d/xfs   restart

Now log out of your desktop and you can log in as any user and the fonts will be available to them.

Game Over.

Welcome You Abroad.

Hi Guys,

Thanks for visiting my blog, Hoped it really Helped you. Please Comment.

Ashwin