install_commands_20.04.txt

sudo apt-get update
sudo apt-get upgrade
sudo apt install make  gcc  libx11-dev libxext-dev libgtk-3-dev libglade2-0 libglade2-dev libpcap0.8 libcap2 ethtool  net-tools  git gitk libcanberra-gtk-module libcanberra-gtk3-module libtiff-dev libboost-all-dev ffmpeg vlc apt-transport-https intltool  libges-1.0-dev libges-1.0-dev gstreamer1.0-plugins-bad libnotify-bin libnotify-dev ipython3 cmake-data librhash0 libuv1 python-numpy cmake-qt-gui  libgstreamer-plugins-{base,good}1.0-dev libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev libxine2-dev libv4l-dev qt5-default libgtk2.0-dev libtbb-dev libatlas-base-dev libfaac-dev libmp3lame-dev libtheora-dev libvorbis-dev libxvidcore-dev libopencore-amrnb-dev libopencore-amrwb-dev x264 v4l-utils  python3-numpy python3-dev python3-pip ubuntu-restricted-extras htop openssh-server mdm mdadm  samba cifs-utils  chrome-gnome-shell apache2 certbot  libpcap-dev python3-tk unattended-upgrades update-notifier-common chrony python3-pysolar


wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | sudo apt-key add -
echo "deb https://download.sublimetext.com/ apt/stable/" | sudo tee /etc/apt/sources.list.d/sublime-text.list 
sudo apt-get update
sudo apt-get install sublime-text

*********************
download gig e v framework
https://www.teledynedalsa.com/en/support/downloads-center/software-development-kits/132/

cd DALSA/
sudo ./corinstall 

reboot!

*****************OPENCV

**** custom repository not needed any more with newest VISSS osftware software, try sudo apt install libopencv-dev instead ****


cd
mkdir opencv_source
cd opencv_source
git clone --depth=100 --single-branch --branch envrionment_variables https://github.com/maahn/opencv.git

git clone https://github.com/opencv/opencv_contrib.git
cd ~/opencv_source/opencv_contrib
git checkout 4.1.1

cd

cd opencv_source/opencv
mkdir build
cd build

cmake -DCMAKE_BUILD_TYPE=RELEASE \
      -DCMAKE_INSTALL_PREFIX=/usr/local \
      -DINSTALL_C_EXAMPLES=ON \
      -DINSTALL_PYTHON_EXAMPLES=ON \
      -DWITH_TBB=ON \
      -DWITH_V4L=ON \
      -DENABLE_CXX11=ON\
      -DWITH_OPENGL=ON \
      -DBUILD_opencv_python3=ON \
      -DWITH_GSTREAMER=ON \
      -DWITH_FFMPEG=ON \
      -DOPENCV_GENERATE_PKGCONFIG=YES \
      -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
      -DBUILD_EXAMPLES=ON .. 
make -j24
sudo make install -j6
sudo sh -c 'echo "/usr/local/lib" >> /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig

#export PKG_CONFIG_PATH='/usr/local/lib/pkgconfig'


********* misc

ssh-keygen 
configure autologin follwoing https://askubuntu.com/questions/1202230/auto-login-enable-on-turn-on-system
or https://askubuntu.com/questions/819117/how-can-i-get-autologin-at-startup-working-on-ubuntu-server-16-04-1

für webserver: 
sudo nano /etc/apache2/sites-enabled/000-default.conf 
DokumentRoot=/data

sudo nano /etc/apache2/apache2.conf 
<Directory /data/>
        Options FollowSymLinks
        AllowOverride None
        Require all granted
        EnableMMAP Off
</Directory>


sudo timedatectl set-timezone UTC

###### VPN

add file "/etc/polkit-1/localauthority/10-vendor.d/org.freedesktop.NetworkManager.pkla" with:
--
[nm-applet]
Identity=unix-user:visss
Action=org.freedesktop.NetworkManager.*
ResultAny=yes
ResultInactive=no
ResultActive=yes
--

create VPN script  "/home/visss/vpn_reconnect.sh" with:
--
#!/bin/bash
CON="vpn.uni-leipzig.de"
STATUS=`nmcli con show --active | grep $CON | cut -f1 -d " "`
if [ -z "$STATUS" ]; then
    nmcli con up $CON
fi
--

do "chmod +x /home/visss/vpn_reconnect.sh" and add to cron with "crontab -e" and add: 
--
* * * * * /home/visss/vpn_reconnect.sh  > /home/visss/vpn_reconnect.log 2>&1
--

finally remove the password of the login key ring, it needs to be unlocked for the vpn password       

##### apache2 web server #####

change directory in /etc/apache2/sites-enabled/000-default.conf
add to /etc/apache2/apache2.conf
--
<Directory /data/>
	Options Indexes FollowSymLinks
	AllowOverride None
	Require all granted
      EnableMMAP Off
</Directory>
--



####create RAID#
#use partitions and make them a little smaller becuase disk sizes are not always the same which can cause problems when swapping disks

sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1
use GUI to fromat and setup RAID in /data
check whetehr RAID exists after reboot


#### VISSSS Software #################
cd
git clone https://github.com/maahn/VISSS
mkdir -p /home/visss/.local/share/applications/
ln -s /home/visss/VISSS/scripts/visss_gui.desktop /home/visss/.local/share/applications/

sudo cp /home/visss/VISSS/scripts/visss-sudoers /etc/sudoers.d/visss


#launch visss_trigger and visss_follower in /home/visss/Desktop/VISSS/scripts/  to sign them

mkdir -p ~/.config/autostart
ln -s /home/visss/VISSS/scripts/visss_gui.desktop /home/visss/.config/autostart/

#### Ethernet card #################
Only required for 5000baseT interfaces and nano 5G cameras:

sudo cp VISSS/scripts/advertise5000baseT.service /etc/systemd/system
sudo systemctl enable advertise5000baseT.service

Ethtools responds with 'Cannot advertise speed 5000 duplex full' but it works anyway?

test with:
sudo service advertise5000baseT start
systemctl status advertise5000baseT.service

sudo ethtool enp4s0


#### clock
 *** only needed when two computers record data of cameras **

add trigger as a clock for the follower, open "sudo nano /etc/chrony/chrony.conf"
server ADD.TRIGGER.IP.ADDRESS iburst prefer

on the trigger "sudo nano /etc/chrony/chrony.conf"
# Allow NTP client access from local network.
allow ADD.FOLLOWER.IP.ADDRESS

on both "sudo systemctl restart chronyd"

check clock status with "chronyc sources", ^* in the beginning means that clock is mainly used.

#### automatic updates

automatic security updates can be enabled follow 
https://help.ubuntu.com/community/AutomaticSecurityUpdates

but make sure to exclude kernel upgrades becuase they mess with the serial card drivers:
Unattended-Upgrade::Package-Blacklist {
      "linux-headers*";
      "linux-image*";
      "linux-generic*";
      "linux-modules*";
}