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====== Using the VirtualBox Linux guest ======

The Linux guest is just a regular Linux machine! We have detailed below only a few technical details

===== Becoming root =====

<note warning>Do not use the root account or privileges if you don't really know what you are doing!</note>

Depending on what you need to do:

  * run a single command with the root access rights\\ **sudo //command//**
  * become root in a terminal\\ **sudo //su -//**
  * use the root password when a program asks for it. Be sure the programs has legitimate reasons to ask for the root password!
  * login as root


===== Creating a new account =====

  * login with the //root// account or an existing account
  * change the system and root account language to English, if it's not already the case:
    * Menu => Administration => Langue => English (USA)
    * Menu => Préférences => Langues => English, United States
    * **reboot**
  * create the new account:\\ Menu => Administration => Users and Groups (the **second** one if you are using the Cinnamon window manager!). The system will ask you for your password or the root password, if you are not using the root account
    * Add User:
      * Warning, make sure the user's home directory will be created in ''/homel'' and not the default ''/home''!
      * Choose ''/bin/tcsh'' instead of the default ''bash'' if that's the users's shell
      * Unselect //Create a private group for the user//
      * If the user has a LSCE account, you can specify the LSCE used ID in //Specify user ID manually// (type ''id user_login'' on an LSCE server and check the value of //uid//)
    * Once the account is created, add it to the //vboxsf// group, if the account will need to [[other:vb:use#using_shared_folders|use shared folders on the host]]
  * add the new //johndoe// account to the people who can use the ''sudo'' command:\\ ''echo -e 'johndoe\tALL=(ALL)\tALL' > /etc/sudoers.d/johndoe''
  * Logout from the account used to create the new account, login with the new account, and get some basic configuration files: **.cshrc**, **.login** and **.emacs**

===== Installing new programs with yum =====

Note: you have to be root to install a program on the command line with yum!

==== nco operators ====

nco web site: [[http://nco.sf.net]]

  * At LSCE: ''yum install nco''
  * Outside LSCE: ''yum --disablerepo lsce install nco''

==== vim/gvim ====

//vim-X11.x86_64 : The VIM version of the vi editor for the X Window System
//
  * At LSCE: ''yum install vim-X11''
  * Outside LSCE: ''yum --disablerepo lsce install vim-X11''


===== Installing programs with the Graphical User Interface =====

FIXME

===== Installing other useful (for LSCE) programs =====


==== cdo ====

Web site: [[https://code.zmaw.de/projects/cdo]]

==== ferret + FAST ====

  * [[http://dods.ipsl.jussieu.fr/fast/fiches/f00/f00.html|FAST Installation Guide]]

==== ifort ====

==== UV-CDAT ====

The following steps can be used to copy the UV-CDAT installed on //asterix// to a desktop/laptop with a similar linux installation

  * Create the top directory where the UV-CDAT versions will be installed (make sure there is enough space available, a few Gb...):\\ ''mkdir /homel/cdat''\\  ''chown jypeter:lsce /homel/cdat''
  * Create a link from where UV-CDAT thinks it is installed, to where it is actually installed (just in case some paths are hard-coded, you never know...):\\ ''mkdir -p /usr/local/install''\\ ''cd /usr/local/install''\\ ''ln -s /homel/cdat cdat''
  * Use rsync to send the UV-CDAT binaries from a machine where it is installed, to the new machine:\\ ''rsync -avzW --delete /usr/local/install/cdat/ jypeter@lsceNNNN:/homel/cdat/''
  * Use the following to initialize UV-CDAT:
    * **Version 1.5**
      * *sh: ''source /usr/local/install/cdat/versions/cdat_install_uv-1.5.1_x86_64_gcc4_VB_10/bin/setup_runtime.sh''
      * tcsh: ''source /usr/local/install/cdat/versions/cdat_install_uv-1.5.1_x86_64_gcc4_VB_10/bin/setup_runtime.csh''
    * **Version 2.1.0**
      * *sh: ''source /usr/local/install/cdat/versions/cdat_install_uv-2.1.0_x86_64_gcc4_VB_13/bin/setup_runtime.sh''
      * tcsh: ''source /usr/local/install/cdat/versions/cdat_install_uv-2.1.0_x86_64_gcc4_VB_13/bin/setup_runtime.csh''


===== Updating Linux =====

This is detailed in... the [[other:vb:update|Update section]] :-)

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