Tips for digital technology

We would love to share our digital technology tips with our developers community.

Linux

Linux Find the oldest file in the directory
 

How to recursively delete all files of a specific extension in the current directory
 

Certbot SSL Certification Auto Renew Cron Job
 

Upgrade Ubuntu 16.04 to Ubuntu 18.04 LTS
 

How to Upgrade Ubuntu 14 to 16
 

Tips for linux/ubuntu 'du' for hidden files

 

Mysql

How to do a case sensitive search in WHERE clause in MySQL?
 

MySql correct font display issue with asian font from DB by using UTF-8
 

MySQL - use LIMIT on select and still getting total rows found
 

Remove or revoke DB access or privileges from mysql user both local and remote
 

Update a column value, replacing part of a string
 

MySQL - Merge two user groups users into one current group, and delete the second group.
 

Mobile App

React Navigation 4
 

Setup React Project

 

Flutter notes
 

Submitting iOS App to Apple App Store
 

How do you generate all sizes app icons for ios and android mobile apps?
 

React Native

React Navigation 5
 

React Navigation 4
 

Setup React Project

 

Flutter

Flutter Layout Cheat Sheet
 

Flutter - main

 

Flutter notes
 
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