Step 1 : Check your Eclipse and JRE

sudo apt-get install sun-java6-jre

Step 2 : Install Flex Builder 3

After downloading the flexbuilder_linux_install_a5_112409.bin change the file permission by running the following command on your terminal. Move the active directory to the .bin file located.

sudo chmod a+x flexbuilder_linux_install_a5_112409.bin

and execute the bin file.

sudo ./flexbuilder_linux_install_a5_112409.bin

It will Launching installer… Proceed the following steps as shown like in screen.
Locate your Eclipse installation path. The Flex Builder will check for the configuration folder inside the Eclipse directory. The default installation path is /usr/lib/eclipse .

The JSEclipse – JavaScript Plugin is optional.

If installer complete the process with out any waring or error, then your Flex Builder configuration is correct. Otherwise check your log.

Then Goto Applications->Programming->Eclipse.

Shell Command for Ubuntu 8.04

sudo cp /etc/gdm/gdm.conf /etc/gdm/gdm.conf.bkp

sudo gedit /etc/gdm/gdm.conf

If the terminal asked for the root password please provide that. After that you will get the conf file in gedit.
Search the “AllowRoot” keyword,  and if you found something like “AllowRoot=false“ change it to “AllowRoot=true”. Save the file close the editor.
Restart the machine.

Note: In Ubuntu 9.10 there is no option to enable the root login.

The Go Programming Language

Its very easy to install GO on ubuntu os. We need some more packages for the ubuntu installation ie
Bison(Bison – GNU parser generator), gcc(GCC, the GNU Compiler Collection), mercurial(Mercurial is a cross-platform, distributed revision control tool for software developers.), libc6-dev(GNU C Library: Development Libraries and Header Files).
All these packages we can install via apt-get commad

Step:1

Install all the packages required.

sudo apt-get install bison gcc libc6-dev mercurial ed make

Step:2

Set up the evironment variables.
You can install GO packages any where on your machine. Here i prefer the $HOME directory.
‘echo $HOME’ commad returns the directory path like ‘/home/tutorboy’ (tutorboy is a user).
Create a folder on $HOME

mkdir $HOME/go

Create another directory inside the go , the bin directory contain your Go compiler

mkdir $HOME/go/bin

Next you have to set evironment variables in the bashrc file. Type the following two commands to edit the bashrc file

cd
gedit .bashrc

Add the following lines at the end of the .bashrc file

export GOROOT=/home/tutorboy/go/hg
export GOOS=linux
export GOARCH=386
export GOBIN=/home/tutorboy/go/bin
PATH=$PATH:$GOBIN

You can check the above configuration with in the terminal

env | grep '^GO'

I got the output like this.

GOBIN=/home/tutorboy/go/bin
GOARCH=386
GOROOT=/home/tutorboy/go/hg
GOOS=linux

Step:3

Download all the files from the repository to ‘/home/tutorboy/go/hg’ directory.(Please double check your $GOROOT path by printing it on terminal echo $GOROOT;)

hg clone -r release https://go.googlecode.com/hg/ $GOROOT

Step:4

Next you have to compile your GO source.

cd $GOROOT/src
./all.bash

Please wait until you get the output something like below

--- cd ../test
N known bugs; 0 unexpected bugs

yeaaa its over… now you can be able to test the GO installation.

Shell Command 1:

cat /etc/issue
// sample output
// Ubuntu 9.10 n l

Shell Command 2:

cat /etc/lsb-release
// sample output
/*
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.10
DISTRIB_CODENAME=karmic
DISTRIB_DESCRIPTION="Ubuntu 9.10"
*/

$ find [/path/to/directory/] -name "*.mp3" -print > myplaylist.txt
$ mplayer -playlist myplaylist.txt

2.

cd /etc/sysconfig/network-scripts 

3. Check for existing network adapters with the command:

ls ifcfg-*

4. Copy ifcfg-eth0 to ifcfg-eth0:0

cp ifcfg-eth0 ifcfg-eth0:0

5. Edit the file

vi ifcfg-eth0:0 and change the following lines

   DEVICE=eth0:0
   IPADDR=x.x.x.x (The ip you want to be added to the server)

Another important parameter in this file is the ONBOOT =yes, because if you forget to set this parameter to Yes, after a reboot the ip’s that you had added just now will be lost.

Make sure for permanent addition of the ip in the server that ONBOOT is set to yes.

This can be achieved by using the option -m with wget

for example:

wget -m http://download.inhouse.net/mag_cd/linux4u/Dec06/app_server/jboss/

It will download all the files/folders inside the directory jboss

-r, –recursive Specify recursive download.

-l, –level=NUMBER Maximum recursion depth (inf or 0 for infinite).

-k, –convert-links Make links in downloaded HTML point to local files.

-p, –page-requisites Get all images, etc. needed to display HTML page.

shutdown -h +period

for example:

shutdown -h +48

here the command will shut down the system after 48hrs(2days).
In the mean time, if you want to cancel the shutdown process, execute the following command.

shutdown -c

sudo apt-get install scite

Goto System->Preferences->Keyboard Shortcuts

Then select the Window management and set the the key for “Hide all normal windows and set focus to the desktop background” as Super L(by pressing Windows Key) .