How to convert PostScript script to a .ps file for viewing in PDF viewer or to PNG

Reading about Gerard Huet's paper on the geometry of the Shri Yantra available in PDF format at this link http://pauillac.inria.fr/~huet/SKT/sanskrit.html.orig, I was prompted to try out the Postscript code he had in and Appendix in the paper. After typing the code into a .txt file, the file did not render using Evince or a PDF … Continue reading How to convert PostScript script to a .ps file for viewing in PDF viewer or to PNG →

How to fix AVD emulator grainy, poor resolution display in Android Studio

The AVD emulator on Android Studio display shows all characters at 1:1 resolution grainy. It is difficult to read the text of the app under testing. To overcome this problem: Create the AVD emulator device and set to no borders or skin. Instead of a docked view, select the Window view, so the device opens … Continue reading How to fix AVD emulator grainy, poor resolution display in Android Studio →

How to backup Android apps source code from Android Studio or command line

Developers use Android Studio to create applications for Android devices. However, if a source code management system like github is not used, then the source code or code of these apps under development has to be backed up. To do this, there are two ways, one from Android Studio and the other from the command … Continue reading How to backup Android apps source code from Android Studio or command line →

Code Snippets Manager or Things List Manager on Linux for app developers or normal users

Working as a developer has it's house-keeping that needs to be done on a regular basis. Developers can save time using code snippets managers whose key feature is to store code snippets with code formatting, tips, tricks, information nuggets, all gained during the course of application development. The same code snippets for an ordinary user … Continue reading Code Snippets Manager or Things List Manager on Linux for app developers or normal users →

How to install masscode code snippets manager on Linux Mint

masscode is one of the best code snippets managers out there. It works on multiple platforms and devices. However, it is only available as a snap package for Linux. To install it on a Linux Mint system where snap packages are disabled by default requires snap packages to be enabled. Therefore, enable snap packages on … Continue reading How to install masscode code snippets manager on Linux Mint →

How to install Snap packages on Linux Mint 21

Installing Snap Packages on Linux Mint 21 is not as straightforward. If the snap package is installed without doing the steps below, it throws an error as below: package snapd has no installation candidate. However, snap can still be enabled, and snap packages installed on it. To install snap, open a terminal window and enter … Continue reading How to install Snap packages on Linux Mint 21 →

How to install Oracle SQL developer data modeler on Linux Mint 21 or Ubuntu Linux

One of the best tools for database design is the Oracle SQL Developer Data Modeler and it's free. As a developer who designs databases this tool is indispensable due to the features it has. The tool can be downloaded from https://www.oracle.com/database/sqldeveloper/technologies/sql-data-modeler/. Note that you need to have an account with Oracle. The only issue is … Continue reading How to install Oracle SQL developer data modeler on Linux Mint 21 or Ubuntu Linux →

How to fix error the following packages have been held back in Linux Mint or Ubuntu Linux

When updating packages in Linux Mint 21 or Ubuntu 22.04 LTS, at times, a message appears, as shown below, that states the following packages have been held back.$ sudo apt-get dist-upgrade <enter> Reading package lists… DoneBuilding dependency tree… DoneReading state information… DoneCalculating upgrade… DoneThe following packages have been kept back:cryptsetup cryptsetup-bin cryptsetup-initramfs libcryptsetup120 upgraded, 0 … Continue reading How to fix error the following packages have been held back in Linux Mint or Ubuntu Linux →

How to fix error of Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead in Ubuntu Linux 22.04 LTS or Linux Mint 21

In Ubuntu 22.04 LTS or Linux Mint 21, there has been a change in the way keys to repos are stored. When installing software like Spotify from the internet via instructions there, the commands used cause an error when running apt-get update. The following error appears: Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d … Continue reading How to fix error of Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead in Ubuntu Linux 22.04 LTS or Linux Mint 21 →