prepare for linux

doc/DebianLinux.md

@@ -2,8 +2,9 @@
 (!!! UNDER CONSTRUCTION !!!)
 
 ## Windows 10
-To run under Debian under Windows 10 [install WSL and package](https://www.microsoft.com/de-de/store/p/debian-gnu-linux/9msvkqc78pk6?rtc=1) and an 
-X-Server like [Xming](http://www.straightrunning.com/XmingNotes/)
+To run under Debian under Windows 10 ...
+* [Install WSL and Debian package](https://www.microsoft.com/de-de/store/p/debian-gnu-linux/9msvkqc78pk6?rtc=1) 
+* Install X-Server like [Xming](http://www.straightrunning.com/XmingNotes/). [More information](https://virtualizationreview.com/articles/2017/02/08/graphical-programs-on-windows-subsystem-on-linux.aspx)
 
 
 ## Instructions
@@ -16,11 +17,32 @@ sudo apt-get --yes install unzip
 sudo apt-get --yes install git
 sudo apt-get --yes install maven
 sudo apt-get --yes install ffmpeg
-cd opt
-sudo tar xzf /mnt/c/Users/User/Downloads/jdk-8u161-linux-x64.tar.gz
+sudo tar xzf /mnt/c/Users/User/Downloads/jdk-8u161-linux-x64.tar.gz -C /opt
 echo export JAVA_HOME=/opt/jdk1.8.0_161 >>~/.bashrc
+export DISPLAY=:0 >>~/.bashrc
 source ~/.bashrc
-export DISPLAY=:0
 ```
 
+Install OpenCV on Linux: Read [Tutorial](http://opencv-java-tutorials.readthedocs.io/en/latest/01-installing-opencv-for-java.html) or execute:
+```
+sudo apt-get --yes install cmake
+sudo apt-get --yes install cmake-gui
+wget https://www.apache.org/dist/ant/binaries/apache-ant-1.10.2-bin.tar.gz ; sudo tar xzf apache-ant-1.10.2-bin.tar.gz -C /opt
+export PATH=$PATH:/opt/apache-ant-1.10.2/bin  >>~/.bashrc
+source ~/.bashrc
+wget https://github.com/opencv/opencv/archive/3.4.1.zip
+sudo unzip 3.4.1.zip -d /opt
+cd /opt/opencv-3.4.1
+sudo mkdir build
+sudo cmake-gui
+```
+and follow the tutorial with ...
+
+* Ungrouped Entries/ANT_EXECUTEABLE: /opt/apache-ant-1.10.2/bin/ant
+* ...
+
+
+
 Ready to use git and maven.
+
+apache-ant-1.10.2-bin.tar.gz