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February 26

How to Upgrade Ubuntu 14 to 16

check current version: lsb_release -a Install Available Updates apt-get update && apt-get upgrade Stop Services service apache2 stop START UPGRADE 1. Install the update-manager-core package: apt-get install update-manager-core 2. Open /etc/update-manager/release-upgrades and verify that the Prompt value is set to lts: 3. You’re now ready to begin the upgrade to Ubuntu 16.04 LTS: do-release-upgrade Follow the on-screen instructions to complete the installation process. ...

February 18

Quick mobile app coding test

Two features in a blank app with header & footer with following two buttons for a quick mobile app coding test:  1. embed webview in your app 2. create location items display in mobile app with map For #1, as simple as creating a button, "go to webview", in your app, click to open a web page url in a webview. url:  For #2, call API with current...

February 12

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

Use SQL_CALC_FOUND_ROWS in your SELECT query and then run SELECT FOUND_ROWS() after that: SELECT SQL_CALC_FOUND_ROWS field_name,filed_name2 FROM tables WHERE CLAUSE LIMIT X; SELECT FOUND_ROWS() ; ...

August 24

Flutter Layout Cheat Sheet

view for detail: https://medium.com/flutter-community/flutter-layout-cheat-sheet-5363348d037e  ...

July 31

Flutter - main

import 'package:flutter/material.dart'; //3rd party import 'package:findiss/Helper/Constants.dart'; import 'package:findiss/pages/home.dart'; void main() { return runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return new MaterialApp( title: Constants.APPTITLE, theme: new ThemeData( primaryColor: Colors.pink ), ...

July 22

Updating App To AppStore

Step 1: Select on the app you want to update and click on 'VERSION OR PLATFORM' Step 2: A pop-up will appear enter the version of the updated app you want to submit (Optional: version must match the version you put it the xCode) Step 3: Enter an information on what's new on this version and click 'save' Step 4: Choose a build then click 'save'. (new...

July 13

Flutter notes

1. setup coding env. for Andriod & iOS Anrioid download Android stuidio and install it: https://developer.android.com/studio  and download for Flutter for Mac: https://flutter.dev/docs/get-started/install/macos   (tip: you might want to use https://code.visualstudio.com/docs/?dv=osx for IDE) iOS note: you might have to run to get your code for xocde: $  sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer $ sudo xcodebuild -license Set up the iOS simulator $ open -a Simulator Ensure that homebrew is up to date: brew update brew install --HEAD usbmuxd brew link...

May 28

Tips for linux/ubuntu 'du' for hidden files

du -sch .[!.]* * |sort -h ...

May 13

Use /etc/hosts to direct wildcard domain name

You need to set up a DNS server. (install dnsmasq (is light) or bind (is rather heavy)). To install... Ubuntu OS: sudo apt-get install dnsmasq In /etc/NetworkManager/dnsmasq.d/dnsmasq-localhost.conf and address=/localhost.com/127.0.0.1 restart sudo /etc/init.d/dnsmasq restart with Mac OS: Install dnsmasq brew update # Always update Homebrew and the formulae first brew install dnsmasq sudo brew services start dnsmasq sudo brew services start dnsmasq Configure dnsmasq Its default configuration file is located at /usr/local/etc/dnsmasq.conf and contains examples of...

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