About Me

这是一个有关Linux视频教程的部落格。我将在此与大家分享经验与所学。请多多赐教。 This is mainly a Video Tutorial Blog about Linux. I am here to share my learnings and experiences. May I invite you to join me in this Quest. It all started with Linux Mint 11 and my move from the dark-side to freedom. Also a move to share experiences, knowledge and community spirit. I started to share my new found knowledge and experience in various different forums - Linux Mint Community, TomatoUSB and places I chance upon when googling. As my journey and voyages become more disperse and frequent, I decided its time for a place and certain ways to tie things together. Thus, the birth of my blog "Guruwannabe" - my user-name at Linux Mint Community, the first place that I became serious about my cyber-presence. Bob Wong (黄昌文)

Tuesday 24 November 2015

Salesforce ADM-201 Lab 07-08:

Report Conditional Highlighting

NOTE:  Highest Video Resolution is 720p

Step by Step Instructions:


To apply conditional formatting to Highlight Win Rate below 40 as Red, 40 to 70 as Average and above 70 as Healthy do:


1.   Click [Customized
Win Rate before Conditional Highlighting

2.   Click [Show] and Select [Conditional Highlighting...]

3.   Select “Win Rate” and key in 40 and 70 as the breakpoints, Click [OK]

4.   Click [Run Report]

Salesforce ADM201 Lab 07-07:

  Report Summary Formula


NOTE:  Highest Video Resolution is 720p

Step by Step Instructions


1.  Open the “Opportunities by Rep” report created in Lab 7-2 (Report builder design view)

2.  To Add a new formula column in the last column of the report:
    Double click on the “Add Formula” field in the Field Panal.
    (This opens up the “Custom Summary Formula” Dialog box)



3.  To Enter the formula to calculate the Win Rate:  WON:SUM / CLOSED:SUM
    Use the [Summary Fields] and [Operators] buttons to construct the formula



4.  Run the report to see the result.

Tips:
i)    You may need to filter the “Status” to see only “Closed” opportunities
ii)   Sorting by “Status” column should make the report easier to understand
iii)  Verify the result by comparing with your manual calculation
 


5.  Click [Save As] to save the report as “Opportunity by Rep with Win Rate”.




Monday 21 April 2014

Heart Bleed for Heat Beat


Overview:  The Heartbleed Bug is a serious vulnerability that allows outside attackers to steal sensitive information on an otherwise believed to be secured connections for example: https (ie: http over ssl/tls), secure email and VPN. All done without leaving a trace.
For more details:  http://heartbleed.com/
Visit me at:  http://community.linuxmint.com/tutorial/view/1628

Heart Bleed Bug

    • What ain't Broken?

    • What is Broken?

    • What is fixed?



What was Not Broken by Heart Bleed?

    • Major Components

      • SSL
      • SSH
      • Heart Beat
    • OpenSSL before 1.0.1

    • Non OpenSSH/OpenSSL implementations



What is Broken?

    • OpenSSH/OpenSSL Heart Beat implementation

      • 1.0.1 Branch
      • 1.0.2-beta Testing Branch
    • Yep, it's an Implementation error



What is fixed?

    • OpenSSL v1.0.1g

      OpenSSL v1.0.2-beta2

    • Distropatch by each distro

      • Built on/after 7apr2014
      • These not necessary be 1.0.1g
    • How to check?

      • openssl version -a
      • Look for build date


Some more Checking?

    • Launch Package Manager

      • Eg: Mint Synatic Package Manger
    • Search/Filter for “ssl” installed

      • Eg: libssl1.0.0, openssl
    • Select libssl1.0.0 and [Get Changelog]

      • Look for CVE-2014-0160 fix
    • CLI - Mint13

      • apt-get changelog openssl
      • apt-get changelog libssl1.0.0 

What to look for :?

  • CVE-2014-0160  fix

  • 1.01-4ubuntu5.12 for Mint13


Anything Else?

    • Yes, Google for the rest :)

      • This is meant As a Simple Guide
    • After Patch, Look for??

      • Generate New Certificates
      • Revoke Old Certificates
      • Get all End users to Change Passwords
      • Other Details
        • Check with your Service Provider eg: Online Mail, Ruby Rail etc...
    • Remember not all OpenSSH/OpenSSL is affected!

20140421

Tuesday 7 February 2012

LinuxMint古朴典雅: 登录,关闭和指挥终端(CLI)



注:
可切换中文字幕。(English Version)

LinuxMint古朴典雅

教程001:登录,关闭和指挥终端(CLI)

环境:系统与装备
LinuxMint 11 64位 2.6.38-8-generic

简介
嗨大家好,
为你介绍Linux Mint清雅美丽!
好吧,我已经决定开始新一系列的LinuxMint视频教程,日日捕捉使用Linux的心得,分享其古朴典雅之处。
近来我们仍在新加坡庆祝华人农历新年。
在Linux中学习视频编辑,让我满载而归。利用各种工具把事情做好,如:RecordMyDesktop,PiTiVi,Kdenlive,也了解Xdamage,怎么影响影片剪辑的工作。
最重要的是很高兴能够与您分享各中过程与经验。
愿你在“追求”Linux的过程中,更加愉快和有趣!
此致敬礼,
有福的宠儿鲍勃(Guruwannabe)

教程覆盖

Monday 6 February 2012

LinuxMint Simply Beautiful: Login, Shutdown and Command Terminal CLI



Note:

You may change subtitle. (中文版本)

LinuxMint Simply Beautiful

Session 001: Login, Shutdown and Command Terminal (CLI)

Environment:

LinuxMint 11 64bit 2.6.38-8-generic

Introduction
Hi Guys,
Introducing Linux Mint Simply Beautiful!
Well, I have decided to start a new series in Bite-Size Linux, Day-by-Day to capture the beauty of using Linux Mint, its simple and elegant experience.
All these while we are still Celebrating our Chinese Lunar New Year in Singapore.
It has been a rewarding experience learning more about Video Editing in Linux. Jumping from a variety of tools to get things done up: RecordMyDesktop, XVidCap, PiTiVi, Kdenlive, and how Xdamage affect Video Editing.
And most importantly, it's been a joy to be able to present you the finish product.
May your quest in Linux made more enjoyable and interesting!
Yours sincerely,
Blessed Beloved Bob (Guruwannabe)
Session Coverage

Friday 27 January 2012

在Linux Mint里解决氢鼓机(Hydrogen Drum Machine)或其他MIDI程序的无声音或发出古怪的声音问题



注:
可切换中文字幕 (English Version)


环境:系统与装备
LinuxMint 11 64位 2.6.38-8-generic
Hydrogen Drum Machine 0.9.4.2 氢鼓机


简介
当我开始这个视频教程,原本想提供个简短容易的方法,解决氢鼓机无声或发出怪音的问题。如果在Linux里,你也在其他MIDI程序中遇到类似情形,可作为参考。
有关桌面音频和视频体验LinuxMint11,一切运作优良。
所有电影, DVD, Youtube, Grooveshark和MP3都是即装即用,精简无比。
除此之外,是一个复杂的音响系统架构。


问题与挑战
我们在这个简单的教程所面对的问题和挑战是氢鼓机无声音或发出奇怪的声音。各位,氢鼓机是一个优秀的软件。我的福气,当审查各种不同的Linux发行版的Live CD时,曾经亲自体验过。所以,我知道它精美之处,尽管我不是什么音乐高手。
直到我开始我的视频画面捕捉,我才发现它比我意识到的怪异。

简速修改:

Thursday 26 January 2012

Fixing No Sound or Weird Sound in Hydrogen Drum Machine or Other MIDI program in Linux Mint


Note:

You may change subtitle. (中文版本)

Environment:

LinuxMint 11 64bit 2.6.38-8-generic
Hydrogen Drum Machine 0.9.4.2
Introduction
When I started this video tutorial, I thought I was giving you a short work-around for Hydrogen Drum Machine if you also experience a similar weird encounter with MIDI and Sound in Linux.
As far as Desktop Audio and Video experience in LinuxMint11 is concerned, everything works excellent.
Movies, DVDs, Youtube, Grooveshark, MP3s all works seamlessly out-of-the box.
Beyond that... a complex Sound System Architecture awaits.

Problem / Challenge
The Problem or Challenge we are facing in this simple tutorial is Weird sound, strange sound or no sound coming from Hydrogen Drum Machine. Hey guys, Hydrogen is an excellent piece of software. To my blessings, I have personally tasted it when reviewing various different Linux Distro Live CDs. So, I know it works beautifully eventhough I do not have much musical experience.
Until I started my video screen-capturing did I discover that it's weirder than I realised.

Quick Fix: