Java 8 Installation in Linux

Open a Linux terminal (command prompt) and issue these commands:

You will be prompted "Do you want to continue?". Hit y and enter When completed it will return to the shell prompt. Now issue this command:

Now, install java 8 using below command. Hit Ok when get asked and  continue. Java 8 will download Oracle Java 8 and install it

To verify that Oracle Java 8 can be found and is the right version issue this command:

To configure:

If you ever wish to remove Oracle Java 8 you can use this command:

Add Environmental (Path) Variable in Linux

1. Open .bashrc file.

      gedit .bashrc

2. Add path in basrc file like this: (In this care our runnable file is in bin directory.)

PATH=/usr/ansys_inc/v162/ansys/bin:$PATH
export PATH

3. Update the environmental.

source .bashrc

Done!

How to add user into sudoers in Red Hat Linux server

Manual way:

• change to root
• change directories to /etc
• allow to write to sudoers file which READ-ONLY by default
• add line with user in question and allow him to use sudo

su
cd /etc
ls -l
chmod +w sudoers
gedit sudoers
--- scroll down in file and find line (root ALL=(ALL) ALL) ---
---- right there add this for the user (example userid: ranjeet)---
root ALL=(ALL) ALL
ranjeet ALL=(ALL) ALL

Exit & Save
chmod -w sudoers  (make the sudoers READ-ONLY again)

All is done and now user “ranjeet” can use elevated right with use of sudo before the command. However if you have too many users to add, it would make sense add them to group and and add the group to sudoers instead of all separate users

Matlab Installation in Ubuntu from iso file.

Here is the screenshot of installation steps. I will write text later. (Click on pics to see in better resolution.)

Seismic Data Processing using Seismic Unix(SU)

Will be uploaded soon...

How to create desktop shortcut for eclipse on Ubuntu

This tutorial shows how to create desktop shortcut for eclipse on Ubuntu.
STEPS
----------
For this example eclipse is first extracted to the a folder where you want to keep it.

1) Create a text file on Desktop and type the following line:

[Desktop Entry]
Name=Eclipse
Exec=/path to eclipse directory/eclipse/eclipse
Icon=/path to eclipse directory/eclipse/icon.xpm
Type=Application

2) Click Save it on Desktop with name as: "eclipse.desktop"
3) Close gedit
4) Right-click eclipse.desktop
5) Click Properties
6) Click Permissions
7) Check Allow executing file as program
8) Click Close
9) Eclipse shortcut is ready!

Seismic Unix Installation in Ubuntu

Download the installation file from CWP website:  click here to download.

After downloading the file, extract the file, you will get a folder called "src"

Now, Make a Directory, where you want to install Seismic Unix...in my case, i am creating "cwp" directory in home directory:

mkdir cwp

Now move the "src" folder in "cwp" directory:  copy "src" and paste it in "cwp".

mv src /cwp/              if src is in your home directory

Go to src/cwp directory:

cd cwp/src

Then type the following command one by one in terminal: Make sure you are in "src" directory.

echo "export CWPROOT=~/cwp" >> ~/.bashrc

echo "export PATH=$PATH:~/cwp/bin" >> ~/.bashrc

source ~/.bashrc

make install 

sudo apt-get install libx11-dev

sudo apt-get install libxt-dev

make xtinstall  

 Now Seismic Unix is installed in your system if you don't get any error up to now. To check it, run this:

suplane | suximage title="My first test" &

 For any query, please, write a comment..........thank you!