====== Quick Links ======
  * [[https://www.debian.org/distrib/packages | Search package]] | [[ubuntu/cookbook | Ubuntu Cookbook]]

====== Installation ======
===== Prepare USB installation disk =====
  * Download the latest Ubuntu TLS minimum CD from [[https://help.ubuntu.com/community/Installation/MinimalCD | this link]]
  * Make bootable USB disk (Yi's approach): 
    * Format a USB disk to FAT32 under windows
    * Download [[http://???? | unetbootin]], run it and load ubuntu iso file into it.
{{ :ubuntu:unetbootin.png?direct&200 |}}
===== BIOS setup =====
BIOS needs to setup to allow booting from USB disk
<WRAP center round tip>
  * press F2         //# Go into BIOS Utility// 
  * press F5         //# Default setting//
  * press F7         //# Go into Advanced Mode//
  * press F12        //# Go into boot menu//
</WRAP>

  * Go to Boot menu in BIOS interface and move to "CSM" item, and make sure you have the following setup

| Launch CSM                            | Enabled               |
| BOOT Device Control                   | UEFI only             |
| BOOT from Network Device              | UEFI driver first     |
| BOOT from Storage Devices             | UEFI driver first     |
| BOOT from PCI-E/PCI Expansion Devices | UEFI driver first     |

  * Move to "Secure Boot" item, and make sure you have the following setup

|OS Type               | other OS              |           

  * Exit/Save

===== Ubuntu server installation =====

  * Boot the computer(rainbow), press F12, boot from UFEI USB disk, and choose Install Ubuntu Server.
<code>
Choose English as language, the U.S. as country. 
Always continue.
Choose the first network card: ‘enp0s319f6: Intel corporation Ethernet [2] 1215-V’.
Set the Hostname(rainbow), username.
Always continue, No encryption.
Choose East of the U.S. as the time zone.
Unmount partitions that are in use? Yes.
</code>
  * Partition disks
From {{:ubuntu:diskpartition1.png?200|}} to {{:ubuntu:diskpartition2.png?300|}}
/Don’t  assign a swap partition, don't update the system auto.
  * Software selection

|Samba server               |
|SSH server                 |

  * Follow the instruction to finish the installation, and reboot into the new system
===== Create user accounts =====
  * Log into root
  * Add group "xue"
<code>
groupadd -g 3500 xue
  * Edit passwd to change the belongings of the first user
   vim /etc/passwd
   into:yxue,3568(user id):3500(group id)
   *change the group belongings of folder yxue
   chown yxue:xue xue
</code>
  * Add user by running cmd/adduser.sh
  * Setup sudo
<code>
apt-get install vim
visudo
</code>
Add the following block in the text file invoked by visudo command
<code>
## Same thing without a password
# %wheel ALL=(ALL) NOPASSWD: ALL
yxue ALL=(ALL) NOPASSWD: ALL
zhouqiao ALL=(ALL) NOPASSWD: ALL
panying ALL=(ALL) NOPASSWD: ALL
</code>
===== Change mirror of Ubuntu =====
<code>cp ~yxue/.vimrc .</code>
<code>
*Edit sourcelist
*change Ubuntu mirror into http://mirror.tuna.tsinghua.edu.cn,uncomment security alternatives
    vim /etc/apt/sourcelist
    apt-get update
</code>
===== Install packages =====
  * Xfce4
<code>
sudo apt-get install xfce4 xfce4-terminal
</code>
  * GNU compiler
<code>
sudo apt-get install gcc gfortran g++
</code>
  * Python packages
<code>
sudo apt-get install libopenblas-base libopenblas-dev
sudo update-alternatives --all  
  * to make sure openblas becomes the default BLAS library
  * path priority is */vim.basic > */vim.gtk3-py2 > */vim.gonme
sudo apt-get install python-numpy python-matplotlib python-scipy ipython ipython-notebook</code>
  * Make sure that numpy is correctly linked to openblas
<code>
cd /usr/lib/python2.7/dist-packages/numpy/linalg
ldd lapack_lite.x86_64-linux-gnu.so
*u will find this
libopenblas.so.0 => /usr/lib/libopenblas.so.0 (0x00007ff6ebd1b000)
</code>
  * if it points to openblas, then okay!
    
  * Disable screensaver to save CPU resources
<code>
sudo dpkg --purge xscreensaver
sudo dpkg --purge xscreensaver-data
    dpkg: warning: ignoring request to remove xscreensaver-data which isn't installed???
</code>
  * Common X11 applications
<code>
sudo apt-get install chromium-browser leafpad mlterm rox-filer xpdf gimp imagemagick vim-gnome links geeqie
</code>
  * Install boost
<code>
apt-get install libboost-all-dev
</code>
===== Installation of 32-bit library =====
  * Type the following commands
<code>
sudo apt-get install lib32z1
sudo apt-get install libx11-6:i386
sudo apt-get install libstdc++6:i386  # for sparky
sudo apt-get install libxext6:i386  # for nmrPipe

# fonts needed for nmrDraw
sudo apt-get install xfonts-75dpi xfonts-100dpi

# for running dtrek2jpeg only
sudo apt-get install libjpeg62:i386
</code>
===== Install X2GO server =====
  * http://wiki.x2go.org/doku.php/doc:installation:x2goserver
<code>
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:x2go/stable
sudo apt-get update
sudo apt-get install x2goserver x2goserver-xsession
</code>
 
===== IP and DNS server Setup =====
==== For old ubuntu ====
<code>
vi /etc/network/interface
    dns-nameservers 166.111.8.28 166.111.8.29 #add this line to appointed network interface
/etc/init.d/networking restart
</code>

==== For ubuntu 18.04 or newer ====
  * [[https://linuxconfig.org/how-to-configure-static-ip-address-on-ubuntu-18-04-bionic-beaver-linux | Ref1]] | [[https://www.tecmint.com/configure-network-static-ip-address-in-ubuntu/ | Ref2]]

<code>
sudo netplan generate

sudo vim /etc/netplan/01-netcfg.yaml

 enp0s8:				
      dhcp4: no
      dhcp6: no
      addresses: [192.168.56.110/24, ]
      gateway4:  192.168.56.1
      nameservers:
              addresses: [8.8.8.8, 8.8.4.4]
 
sudo netplan apply             
 </code>
=====Configure Samba=====
    * reference:[[http://rainbow.life.tsinghua.edu.cn/wiki/samba | samba ]]