Make the touchpad better on Windows

Note: Make sure you have a backup mouse ready before you start following steps

Windows 10 – Precision Touchpads settings

1 Use Win + I key to Open the Settings App

2 Navigate to “Devices -> Touchpad” or just use following link

Click here to bring up touchpad settings page directly (ms-settings:devices-touchpad)

Windows 10 Settings - Touchpad
Windows 10 Settings – Touchpad

Then you can start to customize different gestures

Windows - Settings - Other gestures
Windows – Settings – Other gestures
Windows - Advanced gesture configuration
Windows – Advanced gesture configuration

Precision Touchpad Driver (If Windows 10 Precision Touchpad settings is not showing up)

If you did not see those options in touchpad settings page, try to install the driver, see if the option appears after that.

First we need to find out if our touchpad is mad by Synaptics or ELAN.

1 Launch the Run window via Win + R key combination

Microsoft Windows - Run window
Microsoft Windows – Run window

2 Enter “devmgmt.msc”

3 Now the Device Manager is opened

4 Look for “Mice and other pointing devices”

Device Manager
Device Manager

5 Expand it, see if we have Synaptics or ELAN

6 If it’s Synaptics open this link:

ELAN open this link:

7 Download latest version of the driver from the website

8 When downloaded, open the file, extract it, find the “dpinst.exe”

9 Double click on it to install it

10 Restart the device once the installation is done

11 Follow step 1 to 4 again find the touchpad device, right click on it then click on “Update driver”, reboot maybe required after updating

12 Now you should be able to see the Windows 10 Precision Touchpad options.

Third-party software solution

If the above steps still not working, we can try to install a software which will dramatically improve our touchpad experience as well and it’s free!

The software is named “GestureSign”, even better, we can download it from Microsoft store for free

Microsoft Store- GestureSign
Microsoft Store- GestureSign

Description from Microsoft Store

GestureSign is a gesture recognition software for Windows tablet, Precision Touchpad and mouse. You can automate repetitive tasks by simply drawing a gesture with your fingers or mouse.

GestureSign supports the following commands:

  • Activate Window
  • Window Control
  • Touch Keyboard Control
  • Keyboard simulation
  • Key Down/Up
  • Mouse Simulation
  • Send Keystrokes
  • Open Default Browser
  • Screen Brightness
  • Volume Adjustment
  • Run Command Prompt Commands
  • Open File or Website
  • Launch Windows Store App
  • Send Message
  • Toggle Window Topmost
GestureSign - Action
GestureSign – Action
GestureSign - Gesture
GestureSign – Gesture
GestureSign - Options
GestureSign – Options
GestureSign - Ignored
GestureSign – Ignored

Click here to Download

Open source and Free Alternative to Postman -> Postwoman

Postwoma -
Postwoma –

Postwoman is an open source alternative to Postman. (Usually used for API request building)

Using Postwoman is basically same as using Postman, there should be no learning curve at all if you switch from Postman to Postwoman.

Description from official GitHub page

Features ✨

❤️ Lightweight: Crafted with minimalistic UI design – simple design is the best design.

⚡️ Fast: Send requests and get/copy responses in real-time – fast software is the best software.


  • GET – Retrieve information about the REST API resource
  • HEAD – Retrieve response headers identical to those of a GET request, but without the response body.
  • POST – Create a REST API resource
  • PUT – Update a REST API resource
  • DELETE – Delete a REST API resource or related component
  • CONNECT – Establishes a tunnel to the server identified by the target resource
  • OPTIONS – Describe the communication options for the target resource
  • TRACE – Performs a message loop-back test along the path to the target resource
  • PATCH – Apply partial modifications to a REST API resource
  • <custom> – Some APIs use custom request methods such as LIST. Type in your custom methods.

🌈 Make it yours: Customizable combinations for background, foreground and accent colors: because customization is freedom. Customize now ✨.


  • Choose theme: Kinda Dark (default), Clearly White, Just Black and System theme
  • Choose accent color: Green (default), Yellow, Pink, Red, Purple, Orange, Cyan and Blue
  • Toggle multi-colored headings

Customized themes are synced with local session storage

🔥 PWA: Install as a PWA on your device.


🚀 Request: Retrieve response from endpoint instantly.

  • Choose method
  • Enter URL and Path
  • Send


  • Copy/share public “Share URL”
  • Generate request code for JavaScript XHRFetch and cURL
  • Copy generated request code to clipboard
  • Import cURL
  • Label requests

🔌 WebSocket: Establish full-duplex communication channels over a single TCP connection.

  • Send and receive data
  • Basic and Bearer Token authentication

📡 Server Sent Events: Receive a stream of updates from a server over a HTTP connection without resorting to polling.

🔮 GraphQL: GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data.

  • Set endpoint and get schemas
  • Multi-column docs
  • Set custom request headers
  • Query schema
  • Get query response

🔐 Authentication: Allows to identify the end user.


  • None
  • Basic
  • Bearer Token
  • OAuth 2.0
  • OIDC Access Token/PKCE (Proof Key for Code Exchange)

📢 Headers: Describes the format the body of your request is being sent as.

  • Add or remove Header list

📫 Parameters: Use request parameters to set varying parts in simulated requests.

📃 Request Body: Used to send and receive data via the REST API.


  • Set Content Type
  • Add or remove Parameter list
  • Toggle between key-value and RAW input Parameter list

👋 Responses: Contains the status line, headers and the message/response body.

  • Copy response to clipboard
  • Download response to as a file
  • View preview of HTML responses

⏰ History: Request entries are synced with local session storage to reuse with a single click.


  • Star
  • Label
  • Method
  • Status code
  • URL
  • Path
  • Timestamp
  • Duration
  • Pre-request script

History entries can be sorted by any fields

Histories can be deleted one-by-one or all together

📁 Collections: Keep your API requests organized with collections and folders. Reuse them with a single click.


  • Create infinite collections, folders and requests
  • Edit, delete, move, export, import and replace

Collections are synced with local session storage

🌐 Proxy: Enable Proxy Mode from Settings to access blocked APIs.


  • Hide your IP address
  • Fixes CORS (Cross Origin Resource Sharing) issues
  • Access APIs served in non-HTTPS (http://)
  • Use custom Proxy URL

Official Postwoman Proxy is hosted by ApolloTV – Privacy policy

📜 Pre-Request Scripts β: Snippets of code associated with a request that are executed before the request is sent.


  • Include timestamp in the request headers
  • Send a random alphanumeric string in the URL parameters

Requests with Pre-Request Scripts are indicated in History entries

📄 API Documentation: Create and share dynamic API documentation easily, quickly.


  1. Add your requests to Collections and Folders
  2. Export Collections and easily share your APIs with the rest of your team
  3. Import Collections and Generate Documentation on-the-go

⌨️ Keyboard Shortcuts: Optimized for efficiency.


  • Send Request Ctrl + G
  • Save to Collections Ctrl + S
  • Copy Request Link Ctrl + K
  • Reset Request Ctrl + L

🌎 i18n β: Experience the app in your own language.

  1. Scroll down to the footer
  2. Click “Choose Language” icon button
  3. Select your language from the menu

Keep in mind: Translations aren’t available for all source and target language combinations

To provide a localized experience for users around the world, you can add you own translations.

All i18n contributions are welcome to i18n branch only!

📦 Add-ons: Official add-ons for Postwoman.

  • Proxy β – A simple proxy server created for Postwoman
  • CLI β – A CLI solution for Postwoman
  • Browser Extensions – Browser extensions that simplifies access to Postwoman Firefox (GitHub)  |   Chrome (GitHub)Extensions fixes CORS issues.

Add-ons are developed and maintained under Official Postwoman Organization.

☁️ Auth + Sync: Sign in and sync in real-time.

Sign in with:

  • Google
  • GitHub


  • History
  • Collections

✅ Post-Request Tests β: Write tests associated with a request that are executed after the request response.


  • Check the status code as an integer
  • Filter response headers
  • Parse the response data

To find out more, please check out Postwoman Wiki.


Postwoman Demo
Official GitHub page

How to: Install Xrdp (Remote Desktop) on CentOS 8 – (How to: Use Windows to remote control CentOS 8)

Xrdp is an open-source implementation of the Microsoft Remote Desktop Protocol (RDP) that allows you to graphically control a remote system

1 If you don’t have GUI/Desktop Environment installed on your CentOS 8, install it by using following command

sudo dnf groupinstall "Server with GUI"

2 Install EPEL repo stands for Extra Packages for Enterprise Linux Repository

sudo dnf -y install epel-release

3 Install xrdp

sudo dnf -y install xrdp

4 (To enable the service on boot and start it now)

sudo systemctl enable xrdp --now

5 (Just start the service without enable it on boot)

sudo systemctl start xrdp

6 Check status of xrdp

sudo systemctl status xrdp

7 Configure Xrdp


exec gnome-session

to the end of the configuration file


Or use following command to add “exec gnome-session” to the end of the “/etc/xrdp/xrdp.ini” configuration file

sudo bash -c 'echo "exec gnome-session" >> /etc/xrdp/xrdp.ini'

8 Restart xrdp to load the new configuration

sudo systemctl restart xrdp

9 Configure firewall to allow incoming connection to xrdp

(To allow incoming connection from anywhere to port 3389)

sudo firewall-cmd --add-port=3389/tcp --permanent
sudo firewall-cmd --reload

(To only allow incoming connection from LAN e.g. to 3389 port)

sudo firewall-cmd --new-zone=xrdp --permanent
sudo firewall-cmd --zone=xrdp --add-port=3389/tcp --permanent
sudo firewall-cmd --zone=xrdp --add-source= --permanent
sudo firewall-cmd --reload

Note: More secure way to do is to USE VPN then connect to xrdp server or only accept incoming connection to port 3389 from localhost then setup SSH tunnel to securely forward traffic from your local server on port 3389 to the server on the same port.

Now we use Windows Remote Desktop Connection to connect to the CentOS 8 via xrdp.

How to: Solve math equation/Algebra step by step? Mobile App and Windows Software

Are you an student? Trying to resolve an math equation? Don’t know how to resolve it even the final answer is in front of you? Read on! 😉

Microsoft created two free Math tools which can help you to get the answer, even better, it can show you step by step resolution, so that you understand and learn how to get the final answer rather than copy the final answer.

Microsoft Math Solver

With this mobile app, we can input math equation by three ways:

  • Scan from writing (Take photo from exercise book etc.)
  • Handwriting directly within the App
  • Enter the equation by using builtin math keyboard

It will then return final results with steps which you can expand and learn.

Microsoft Math Solver
Microsoft Math Solver
Microsoft Math Solver - Snap and Solve
Microsoft Math Solver – Snap and Solve
Microsoft Math Solver - Draw and Practice
Microsoft Math Solver – Draw and Practice
Microsoft Math Solver - Explore and Learn
Microsoft Math Solver – Explore and Learn
Microsoft Math Solver - Steps
Microsoft Math Solver – Steps
Microsoft Math Solver - Steps
Microsoft Math Solver – Steps
Microsoft Math Solver - Graph
Microsoft Math Solver – Graph
Microsoft Math Solver - Handwriting
Microsoft Math Solver – Handwriting
Microsoft Math Solver - Built-in math keyboard
Microsoft Math Solver – Built-in math keyboard
Microsoft Math Solver - Built-in math keyboard
Microsoft Math Solver – Built-in math keyboard
Microsoft Math Solver - Resolve
Microsoft Math Solver – Resolve
Microsoft Math Solver - Scan
Microsoft Math Solver – Scan
Microsoft Math Solver - Resolve
Microsoft Math Solver – Resolve
Microsoft Math Solver - Resolve
Microsoft Math Solver – Resolve
Microsoft Math Solver - Resolve
Microsoft Math Solver – Resolve
Microsoft Math Solver - Final Answer
Microsoft Math Solver – Final Answer

Microsoft Mathematics

This free software can be used on Microsoft Windows to resolve math equations.

Microsoft Mathematics
Microsoft Mathematics
Microsoft Mathematics - Main Window
Microsoft Mathematics – Main Window
Microsoft Mathematics - Resolve linear equation in two variable
Microsoft Mathematics – Resolve linear equation in two variable
Microsoft Mathematics - Resolve linear equation in two variable, Steps
Microsoft Mathematics – Resolve linear equation in two variable, Steps
Microsoft Mathematics - Resolve linear equation in two variable, Steps
Microsoft Mathematics – Resolve linear equation in two variable, Steps

Keywords: Solve math equation, solve linear equation, solve linear equation in two variable, solve math problems, software, application, app, computer program, free, Algebra

How to: Find which process is causing high CPU usage Linux/Ubutu/Debian/Kali Linux/CentOS/RHEL

“top” command

top shows CPU usage in real time.

By default, it lists process by their CPU usage, refreshes every 5 seconds.

We can use following command to show top 10 processes with highest CPU usage.

top -b | head -10
[email protected]:~# top -b | head -10
top - 02:05:40 up 20:24,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 165 total,   1 running, 164 sleeping,   0 stopped,   0 zombie
%Cpu(s):  3.1 us,  3.1 sy,  0.0 ni, 93.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :   3913.3 total,   2066.4 free,    617.4 used,   1229.6 buff/cache
MiB Swap:   4094.0 total,   3850.2 free,    243.8 used.   3042.1 avail Mem 
    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  61649 root      20   0    9144   3560   3164 R   6.7   0.1   0:00.01 top
      1 root      20   0  166420   5908   3936 S   0.0   0.1   0:04.54 systemd
      2 root      20   0       0      0      0 S   0.0   0.0   0:00.03 kthreadd
  • -b : Batch mode.
  • head -10: Display first 10 lines in the output.
  • PID : Unique ID of the process.
  • USER : Owner of the process.
  • PR : priority of the process.
  • NI : The NICE value of the process.
  • VIRT : How much virtual memory used by the process.
  • RES : How much physical memory used by the process.
  • SHR : How much shared memory used by the process.
  • S : This indicates the status of the process: S=sleep R=running Z=zombie.
  • %CPU : The percentage of CPU used by the process.
  • %MEM : The percentage of RAM used by the process.
  • TIME+ : How long the process being running.
  • COMMAND : Name of the process.

“ps” command

“ps” stands for “processes status”, it display the information about the active/running processes on the system.

We can use following command to find out high CPU usage processes.

ps -eo pid,ppid,%mem,%cpu,cmd --sort=-%cpu | head
[email protected]:~# ps -eo pid,ppid,%mem,%cpu,cmd --sort=-%cpu | head
     78       2  0.0  0.4 [kswapd0]
    639     576  4.1  0.4 /usr/lib/xorg/Xorg :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
    262       2  0.0  0.2 [kworker/1:1H-kblockd]
    267       2  0.0  0.1 [kworker/0:1H-kblockd]
    889     823  0.8  0.1 xfwm4 --display :0.0 --sm-client-id 24f144caf-a490-40f0-afc0-fd75665210e1
      1       0  0.1  0.0 /sbin/init splash
      2       0  0.0  0.0 [kthreadd]
      3       2  0.0  0.0 [rcu_gp]
      4       2  0.0  0.0 [rcu_par_gp]

To see the command name instead of full path.

ps -eo pid,ppid,%mem,%cpu,comm --sort=-%cpu | head
[email protected]:~# ps -eo pid,ppid,%mem,%cpu,comm --sort=-%cpu | head
     78       2  0.0  0.4 kswapd0
    639     576  4.1  0.4 Xorg
    262       2  0.0  0.2 kworker/1:1H-kblockd
    267       2  0.0  0.1 kworker/0:1H-kblockd
    889     823  0.8  0.1 xfwm4
      1       0  0.1  0.0 systemd
      2       0  0.0  0.0 kthreadd
      3       2  0.0  0.0 rcu_gp
      4       2  0.0  0.0 rcu_par_gp
  • -e : Select all processes.
  • -o : To customize a output format.
  • –sort=-%cpu : Sort the ouput based on CPU usage.
  • head : To display first 10 lines of the output
  • PID : Unique ID of the process.
  • PPID : Unique ID of the parent process.
  • %MEM : The percentage of RAM used by the process.
  • %CPU : The percentage of CPU used by the process.
  • Command : Name of the process.


htop is a command line utility that allows you to interactively monitor your system’s vital resources or server’s processes in real time

You might need to install htop first

#Debian/Ubuntu/Kali Linux etc.
sudo apt install htop
#CentOS/RHEL etc.
sudo yum install htop

To launch htop (Use “q” key to exit)


We can easily sort the processes by their Priority, Nice, Virtual memory usage, Memory, CPU and running time etc. Simply by clicking on the column header.


glances is another utility which can be easily installed and used system resource monitoring tool.


#Debian/Ubuntu/Kali Linux etc.
sudo apt install glances
#CentOS/RHEL etc.
sudo yum install glances 

Launch (Use “q” key to exit)


How to: compare Files/Code/Folders/Images/Pictures – List of three Open source Comparing Software/Tools


  • Windows
  • Open source/Free
  • Compare text files/source code files/folders/images
  • Easy to use


Notepad ++

Notepad++ with Compare plugin
Notepad++ with Compare plugin
  • Windows
  • Open source/Free
  • Compare text files/source code files
  • Easy to use


By default Notepad++ doesn’t have compare function.

We can make it possible by easily installing a compare plugin after Notepad++ is installed.

“Plugins -> Plugins Admin…-> Search for “Compare -> Check “Compare” -> Click “Install” button. -> Click on Yes when the pop-up window appears” After it’s done, Notepad++ will restart itself.

Notepad++ -> Plugins Admin
Notepad++ -> Plugins Admin
Notepad++ Install Compare plugin
Notepad++ Install Compare plugin
Click on Yes
Click on Yes
Wait until it's downloaded and installed
Wait until it’s downloaded and installed

Now we can see the Compare plugin is installed. “Plugins -> Compare”

Compare plugin installed
Compare plugin installed


  • Windows/Linux
  • Open source/Free
  • Compare text files/source code files
  • Easy to use



  • Windows/Linux
  • Open source/Free
  • Compare Image files
  • Easy to use


There are many free online text/source code compare and image compare tools as well which doesn’t require any installation, can be handy when it needs to be done quickly, not suitable for huge files or images or any confidential content.

How to: Copy text from pictures/images without OCR in Google Chrome

Project Naptha
Project Naptha

Project Naptha

An handy free plugin for Google Chrome.

You can highlight, copy, edit, and translate text from any image on the web using computer vision instead of OCR.

With OCR, sometimes, we can get a lot of text like “Hel10” or “He l | O” which is annoying. This plugin uses computer vision algorithms rather than OCR, so that it can recognize any text without the need to know what language first.

Note: It might interfere with right click on images (Workaround: Disable the plugin when not in use or simply right click on image part, not text part.)


Official website

How to fix: Notepad ++ Shortcut key disappear, not working

The Issue

When closing the file we are editing in Notepad++, it will ask if we want to save the file or not, usually we can use Y, N, C, a, o keys to select intend action.

Notepad++ Save file dialog with shortcut keys
Notepad++ Save file dialog with shortcut keys

Sometimes the shortcut keys can disappear:

Notepad++ Save file dialog without shortcut keys
Notepad++ Save file dialog without shortcut keys

The Fix

1 Open the Notepad++ installation directory

2 Navigate to “Notepad++\localization” folder

3 For English, open the “english.xml” file

4 Find following lines

<DoSaveOrNot title="Save">
	<Item id="1761" name="Save file "$STR_REPLACE$" ?"/>
	<Item id="6" name="Yes"/>
	<Item id="7" name="No"/>
	<Item id="2" name="Cancel"/>
	<Item id="4" name="Yes to all"/>
	<Item id="5" name="No to all"/>

5 Change to

<DoSaveOrNot title="Save">
	<Item id="1761" name="Save file "$STR_REPLACE$" ?"/>
	<Item id="6" name="&amp;Yes"/>
	<Item id="7" name="&amp;No"/>
	<Item id="2" name="&amp;Cancel"/>
	<Item id="4" name="Yes to &amp;all"/>
	<Item id="5" name="N&amp;o to all"/>

6 Save the file, now change Notepad++ to other languages then change back to English, you will be able to see and use those shortcut keys again.

Note: For other languages, just modify the same section




name="&amp;Y Yes"

Open source Online Document Management System for Developers – ShowDoc

ShowDoc is a tool greatly applicable for an IT team to share documents online. It can promote communication efficiency among members of the team.

What can it be used for?

  • API Document ( Demo

With the development of mobile Internet, BaaS (Backend as a Service) becomes more and more popular. The Server end provides API, and the APP end or Webpage frontend can invoke data conveniently. Using ShowDoc can compile exquisite API documents in a very fast and convenient way.

  • Data Dictionary ( Demo

A good Data Dictionary can easily exhibit database structure to other people, such as definition of each field and the like.

  • Explanation Document ( Demo

You can absolutely use ShowDoc to compile the explanation documents for some tools, as well as to compile some technical specifications explanation documents for the team to look up.

What functions does it have?

  • Sharing and Exporting

Responsive webpage design can share the project documents to computer or mobile devices for reading. It can also export the project into word document for browsing offline.

  • Permission Management
  • Public Project and Private ProjectProjects on ShowDoc are divided into two categories including Public Project and Private Project. Public Project can be visited by any user no matter he/she logs in or not, while inputting password for verification is needed for visiting the Private Project. The password is set by project creator.
  • Project Transfer

The project creator can transfer the project to other users of the website freely.

  • Project Members

You can easily add or delete project members in the project of ShowDoc. Members of the project can edit the project, but they can not transfer or delete the project (only creator of the project has the permission).

  • Edit Function
    • Markdown Edit
    ShowDoc adopts Markdown Editor, and it is excellent both in editing and reading experience. If you know nothing about Markdown, please search “Learning and Introduction of Markdown” on the search engine.
    • Template Insert
    On the editing page of ShowDoc, a click on the button which is on the top of the Editor can easily insert API interface template and data dictionary template. After inserting the template, altering data is the only thing that need to do and it reduces a lot of work in editing.
    • History Version
    ShowDoc provides a function of History Version on the page, and you can easily restore the page to the former version.