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February 20

Renew IOS Distribution or Development Certificate

when you get the expire alert of your ios distribution. 1. on your mac, open keychain access app: 2. go to certificate assistant: 3. enter certificate user email info: 4. sve certificate signing request cert: 5. go to  6. go to account certificates, ids & profiles:  7. add certificates:  8. choose ios distribution app store ad hoc: 9. upload certificate signing request:  10. click download your ios distribution cert: 11. save your...

February 9

HTML5 Video Streaming from Google Drive

Using your current Google Drive as your video host. Using HTML5 video to play your videos from your Google Drive. First, get your google drive file ID for your video.  It’s important to share the video for public viewing. I created a public folder on my Google Drive, so I can easily track and manage my public files. To share the video: Select the...

December 7

Recover .jks file to update App on Google Play

For any reason that you might lose your .jks file to update your current app on google play, you can use following steps to recover or regenerate a new jks. View this link and follow the steps to recover the .jks: ...

November 27

Release expo app to iOS

1. config app.json example:  {   "expo": {     "name": "Tech Blog",     "slug": "tech_blog",     "privacy" : "public",     "sdkVersion" : "39.0.0",     "platforms" : [       "ios",       "android"     ],         "version": "4.0.9",     "orientation": "portrait",     "icon": "./assets/icon.png",     "splash": {       "image": "./assets/splash.png",       "resizeMode": "contain",       "backgroundColor": "#ffffff"     },    ...

November 23

Setup AWS Cli


November 11

setup MySQL on ubuntu 18.04 server

Install mysql sudo apt update sudo apt install mysql-server sudo mysql_secure_installation ...

September 20

Font Awesome icon as background image

CSS:  #wrap {   background: #fff;   position: relative; } #wrap:after {   content: "\f087";    font-family: FontAwesome;   font-style: normal;   font-weight: normal;   text-decoration: inherit;   position:...

September 11

Linux Find the oldest file in the directory

find the oldest file in the directory find  .  -type f -printf '%T+ %pn' | sort | head -n 1 ...

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