After Ubuntu Installation

After Ubuntu Installation.txt

1) Install QuiteRSS (Instructions https://quiterss.org/quiterss-for-other-os)
     sudo add-apt-repository ppa:quiterss/quiterss
     sudo apt-get update
     sudo apt-get install quiterss
     Note: While copypasting above commands from the website, first copy them to notepad (some characters seem to be causing problem, installation stalls)
2) Disable guest session (Ubuntu 16.04)
   sudo sh -c 'printf "[Seat:*]\nallow-guest=false\n" >/etc/lightdm/lightdm.conf.d/50-no-guest.conf'
   To undo (restore Guest option), remove the file created:
   sudo rm /etc/lightdm/lightdm.conf.d/50-no-guest.conf
   More info: https://askubuntu.com/questions/62564/how-do-i-disable-the-guest-session

3) Firefox:
   a) Before upgrading take backup of Firefox bookmarks, username passwords, grease monkey scripts.
      Notedown Addon names and settings if necesssay
   b) Disable webnotifications
      about:config -> dom.webnotifications.enabled false
      More info: https://www.howtogeek.com/288946/how-to-stop-websites-from-asking-to-show-notifications/
   c) Enable copy paste
      about:config -> change 'dom.event.clipboardevents.enabled' value to false.
      More info: https://digiwonk.gadgethacks.com/how-to/re-enable-copy-paste-annoying-sites-block-0155910/
   d) about:config -> browser.sessionstore.interval 15000 -> 600000 (10 mins)
   f) about:config signon.autofillForms false
   g) Addons
      1) Grease monkey
      2) uBlock Origin
      3) Print Edit WE
      4) h264ify 
      5) Disconnect
      6) Night Mode Pro
  h)  Before doing 'Help' -> 'Trouble Shooting Information' -> 'Refresh Firefox' also start from (a)
      1. Edit -> Preferences -> General -> Startup -> Restore previous session
      2. Change theme
      3. Customize appearance. Bread crumb -> Customize
  i)  After 'Help' -> 'Trouble Shooting Information' -> 'Refresh Firefox'
      . Uncheck 'Ctrl + Tab' cycles through tabs in recently used order
      . Files and Applications -> Downloads -> Check 'Always ask you where to save files'
      . Search Bar -> Check 'Add search bar in tooolbar'
      . Default search engine -> Change to 'Duck Duck Go'
	      . Uncheck 'Provide search suggestions'
      . Uncheck Snippets
      . Top sites -> 2 rows
      . Highlights
	      . Uncheck Most Recent Download
	      . Pages Saved to Pocket
      . Move Back, Forward, Home and Refresh buttons to right side of location bar
      Observe these things
	. Browsing
	  . Uncheck Recommend etensions as you browse
	  . Recommend features as you browse
 
4) Install 'Unity Tweak Tool'. May uninstall after changes are done.

5) Install Java 16 (Source: https://stackoverflow.com/questions/49507160/how-to-install-jdk-10-under-ubuntu)
   $ tar xzvf openjdk-16_linux-x64_bin.tar.gz 
   $ sudo mkdir /usr/lib/jvm
   $ sudo mv jdk-16 /usr/lib/jvm/java-16-openjdk-amd64/
   $ sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-16-openjdk-amd64/bin/java 1
   $ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-16-openjdk-amd64/bin/javac 1
   $ sudo update-alternatives --config java
   $ sudo update-alternatives --config javac
   $ java -version
   $ javac -version
   
   Remove older versions installed
     sudo update-alternatives --display java
     sudo update-alternatives --remove java /usr/lib/jvm/java-15-openjdk-amd64/bin/java
     sudo update-alternatives --display javac
     sudo update-alternatives --remove javac /usr/lib/jvm/java-15-openjdk-amd64/bin/javac
     Then remove the directories
     sudo rm -rf /usr/lib/jvm/java-15-openjdk-amd64/
      
   Set JAVA_HOME (Linux)
   
   Open ~/.bashrc in any text editor and add:
     export JAVA_HOME=/path/to/java_installation (e.g. /usr/lib/jvm/java-16-openjdk-amd64/)
   Run the source command to load the variable:
     source ~/.bashrc
   Check
     echo $JAVA_HOME
      
   Java download: http://jdk.java.net/<Version>/ e.g. http://jdk.java.net/16/ -> Linux / x64
   Javadoc download: https://www.oracle.com/technetwork/java/javase/downloads/index.html
   JavaFX download: https://openjfx.io/
   JavaFX Javadoc download: http://mvnrepository.com/artifact/org.openjfx
     -> Module (e.g. JavaFX Controls)
     -> Click on version (e.g. 11)
     -> Files -> View All
     -> Click on javafx-<module>-<version>-javadoc.jar (e.g. javafx-controls-11-javadoc.jar)
     
6) Download Eclipse from here: https://www.eclipse.org/downloads/packages/
    -> Eclipse IDE for Java Developers

   a) Web deveopment addons
      1) Eclipse -> Install New Software -> Work with '-All Available Sites-'
      2) Under Web, XML, JavaEE and OSGi Enterprise Development
	   Select Eclipse Web Developer Tools
             (Description: Eclipse Web Developer Tools, including HTML, JavaScript, CSS, XHTML, and more.)
   b) JSHint: http://marketplace.eclipse.org/content/jshint-eclipse#group-details
   c) Install Spot Bugs
      1) http://spotbugs.readthedocs.io/en/latest/eclipse.html
      OR
      Add this repository https://spotbugs.github.io/eclipse/ 

7) Dropbox
     a) Take backup of Dropbox folder (it might save bandwidth)
        Keep this 'Dropbox' folder in new system /home directory.
        Don't keep the folder in drive other than the /home, dropbox complaining that Dropbox folder is not found.
        Perhaps Dropbox is starting before OS mounting another drive.
     b) Install 64 bit .deb drop box installer from https://www.dropbox.com/install?os=linux
     	For older version (may not be required for new version):
        Note: This was not installed properly and after reboot Ubuntu 16.04 showed 'package broken' error
        and asked to execute 'sudo apt-get install -f' command, this has fixed the problem.
        or follow instructions at: https://www.linuxbabe.com/cloud-storage/install-dropbox-ubuntu-16-04
     c) Below issue seem to be fixed in new version
        Issue: As of v37.4.29 Dropbox is starting automatically even though 'Start Dropbox on system startup' is unchecked.
        Workaround: ~/.config/autostart -> right click on 'dropbox.desktop' -> Properties -> Change 'command' to 'dropbox stop'
        In the Permissions tab change Access to read-only (so that this won't be overwritten)
     d) Note: While moving Dropbox folder to another locaion 'F1', Dropbox always adds '/Dropbox' to the path.
        So the final path will be 'F1/Dropbox'.
     
8) Artha (ditctionary) won't start automatically.
   To start: clicl on Super key -> type 'Startup Applications' -> Add -> Name: Artha, Command: /usr/bin/artha
   
9) Add Onboard to startup. (similar to Arhta)
   
10) Vera Crypt mount may not work in Ubuntu 16.04
    sudo apt-get install dmsetup
    More info: https://askubuntu.com/questions/886785/error-trying-to-open-veracrypt-container-veracryptprocessexecute108
    
11) Install telugu font from here: http://fonts.siliconandhra.org/

12) Install SM Player
    VLC from https://www.videolan.org/vlc/download-ubuntu.html -> Click on 'Get it from Snap store'
    
13) Install 'SafeEyes'
      sudo add-apt-repository ppa:slgobinath/safeeyes
      sudo apt update
      sudo apt install safeeyes
    
13) If ffmpeg is not latest, download latest static build from https://johnvansickle.com/ffmpeg/
    And create a symbolic link
    sudo ln -s /media/../Softwares/ffmpeg/ffmpeg-4.0.1-64bit-static/ffmpeg /usr/bin/ffmpeg4
 
14) Update .bashrc file (hidden file in '/home/<username>' folder):

    To run 'some-jar-file.jar' from anywhere on the command line add this line 
      alias some-jar-file.jar='java -jar /<folder-path>/some-jar-file.jar'
     
    export JAVA_HOME=/usr/lib/jvm/java-<version>-openjdk-amd64/
    export JFX_LIB=/<path>/JavaFX/javafx-sdk-11/lib/

    To run standalone executable (e.g. latest standalone 'ffmpeg' or 'youtube-dl') from anywhere on the command line
      1. Create 'somebin' any where in the file system
      2. Add 'somebin' to path
      3. Create shorcuts to execubles in the 'somebin' directory
      
    export PATH=$PATH:$JAVA_HOME/bin:/<folder-path>/somebin

15) Install 'Subtitle Editor (GNome)'
    Configuration
    1. Make sure video (View -> Video Player), Wave editor (View -> Waveform) and subtitles (View -> Timing (This defined what fields should b e visible. Can be configured using View -> View Editor -> Select Timing and check required fields) are visible
    2. After opening the video, generate Waveform (Waveform -> Generate Waveform From Video) and save it for later use.
    3. Options -> Preferences -> Timing -> Check 'Automatically hilight timing errors'. Also check and configure other preferences.
    4. Options -> Configure Keyboard Shortcuts -> Add a shortcut to 'Play Selection' (click on the right end, it won't take space as shortcut)
    Use up and down arrows to select a dialog and use above configured shortcut to play selection   
16) Install Okular pdf viewer (faster than the default)
    Pros: a. Pre load pages
    Cons: a. No invert colors b. No autoscroll
17) Download shotcut AppImage https://github.com/mltframework/shotcut/releases
    Also install cputool (or another tool cpulimit) to reduce cpu usage while exporting
    While exporting video from shotcut, find high cpu usage process. i.e. qmelt
    To limit a process CPU to 20% and the processor has 4 cores use value 80 for -c (4 * 20)
    cputool -p <qmelt pid> -c 80
    e.g. cputool -p 19210 -c 80
18) Reduce/change the time for OS selection menu in GRUB to 4 seconds
    sudo gedit /etc/default/grub
    Change GRUB_TIMEOUT=4
    Comment line with #. #GRUB_HIDDEN_TIMEOUT=0
    sudo update-grub
    source: https://askubuntu.com/a/163877