Downloading the Geant4 package

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'''NOTE:''' for the duration of this guide, replace ''“your_name”'' in any example directory with your username. You can find your username by clicking on the Linux menu button “System”. Next '''Preferences''' > '''About me'''. In the top-right hand corner your username will be written.
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<span style="color:#ff0000">'''NOTE:''' for the duration of this guide, replace ''“your_name”'' in any example directory with your username. You can find your username by clicking on the Linux menu button “System”.  
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Next '''Preferences > About me'''. In the top-right hand corner your username will be  
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written. </span>
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''' To install Geant4 you will need to download the Geant4 Linux package.'''
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To install Geant4 you will need to download the Geant4 Linux package.
 
# Navigate to the website: [http://geant4.cern.ch/support/download.shtml Geant4 download] and click '''Dowload''' for the option “GNU or Linux tar format, compressed using gzip”
# Navigate to the website: [http://geant4.cern.ch/support/download.shtml Geant4 download] and click '''Dowload''' for the option “GNU or Linux tar format, compressed using gzip”
# The standard download location is “/home/your_name/Downloads. You may have changed your download location so navigate to this folder.
# The standard download location is “/home/your_name/Downloads. You may have changed your download location so navigate to this folder.
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'''The Geant4 unzipped folder'''
'''The Geant4 unzipped folder'''
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The unzipped folder contains several subdirectories. These folders are essentially the installation packages and files. You need not concern yourself at all with them; the command terminal will deal with them.
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The unzipped folder contains several subdirectories. These folders are essentially the installation packages and files. You need not concern yourself at all with them; the command terminal will deal with them.
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'''Linux terminal'''
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Now that the package has been fully unzipped you will need to to open a Linux Terminal. You can do this by using the Linux menu system: Applications > Sytem Tools > Terminal
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'''Installing libraries'''
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NOTE:  To install these additional libraries ensure you are using the terminal as a root user. If using a UCL computer, these libraries should already be installed and you can skip to the next page. If these libraries are not installed contacted your system administrator for help.
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How to use terminal as root user
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Open a command terminal (as shown on the previous page) and type
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“su”
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into the command terminal.
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You will then be prompted to enter a password. Please enter the root password that you set up when you installed linux. When you type the password you will not see any new characters appearing on the screen. THIS IS NORMAL.
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When you have entered your password, press the return key. You should now be presented with the line:
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[root@localhost your_name]#
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The first set of libraries you will need to install are the expat libraries. This library resolves XML files. To install these libraries type the command
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sudo yum install expat*
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The * makes sure that all libraries with the word “expat” are installed.
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When prompted to type Y or N, type Y followed by the return key.
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You will now need to install the mesa libraries. These libraries contain the visualiser OpenGL
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To install these libraries type the command:
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sudo yum install mesa*
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You will finally need to install the library cmake. This library allows you to build and run Geant4 simulations. Type the command
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sudo yum install cmake
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Latest revision as of 14:18, 16 July 2014

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