Connect Android Device to Ubuntu Laptop

 

Step 1: How to Install scrcpy in Ubuntu 18.04.5

Step 2: How to enable USB in Samsung Tablet.

Step A:

Settings

=> About tablet

        => Software Information

                => Build Number => here tab 7 times.. then Developer option will be

enabled.

Step B:

Settings

=>Enable USB Debugging

Step 3: Connect Table to Laptop with USB Cable

Step 4: Now Type the following to connect ti the tablet.

scrcpy --lock-video-orientation 1

Step 5: Increase screen size in scrcpy.

scrcpy 1.13 adds two new options related to orientation: an option to lock the video orientation, and shortcuts to rotate display in steps of 90°.

scrcpy --lock-video-orientation 0 

• 90° counterclockwise:

scrcpy --lock-video-orientation 1

• 180°:

scrcpy --lock-video-orientation 2

• 90° clockwise:

How to To Install Jupyter on Ubuntu 18.04

How to To Install Jupyter on Ubuntu 18.04

How to run Jupyter.

jupyter notebook --allow-root

How to Install OpenCV on Ubuntu 18.04

 

How to Install OpenCV on Ubuntu 18.04

Executing shell script as cronjob

Problem: Executing  shell script as cronjob

Solution:  

Try,

 #!/bin/bash
 /bin/touch file.txt

cron as:

 * * * * * /bin/sh /home/myUser/scripts/test.sh

And you can confirm this by:

 # tailf /var/log/cron

Best tool for Cron learning

crontab  

maven pom analysis

Pom.xml file analysis. 

Scala REPL no echo on input Ask Question

 This seems to be an issue with JLine2 being built with JDK9+, but being used on JDK8. If you're on bionic, try this PPA for jline2: https://launchpad.net/~lokkju/+archive/ubuntu/java-compat/

(or just download and install https://launchpad.net/~lokkju/+archive/ubuntu/java-compat/+build/16458066/+files/libjline2-java_2.14.6-1ubuntu1~bionicppa1_all.deb via dpkg)

You can verify jline2 is the problem by running scala -Ydebug, and looking for ByteBuffer class not found error.