Window run shortkey i have never ever know before

Quick Access To C: drive	\
Open the current user’s home folder	.
Open up the Users folder	..
Open Documents Folder	documents
Open Videos folder	videos
Open Downloads Folder	downloads
Open Favorites Folder	favorites
Open Recent Folder	recent
Log off	logoff
Open Pictures Folder	pictures
Windows Sideshow	control.exe /name Microsoft.WindowsSideshow
Windows CardSpace	control.exe /name Microsoft.cardspace
Windows Anytime Upgrade	WindowsAnytimeUpgradeui
Taskbar and Start Menu	control.exe /name Microsoft.TaskbarandStartMenu
Troubleshooting	control.exe /name Microsoft.Troubleshooting
User Accounts	control.exe /name Microsoft.UserAccounts
Adding a new Device	devicepairingwizard
Add Hardware Wizard	hdwwiz
Advanced User Accounts	netplwiz
Advanced User Accounts	azman.msc
Backup and Restore	sdclt
Bluetooth File Transfer	fsquirt
Calculator	calc
Certificates	certmgr.msc
Change Computer Performance Settings	systempropertiesperformance
Change Data Execution Prevention Settings	systempropertiesdataexecutionprevention
Change Data Execution Prevention Settings	printui
Character Map	charmap
ClearType Tuner	cttune
Color Management	colorcpl
Command Prompt	cmd
Component Services	comexp.msc
Component Services	dcomcnfg
Computer Management	compmgmt.msc
Computer Management	compmgmtlauncher
Connect to a Network Projector	netproj
Connect to a Projector	displayswitch
Control Panel	control
Create A Shared Folder Wizard	shrpubw
Create a System Repair Disc	recdisc
Credential Backup and Restore Wizard	credwiz
Data Execution Prevention	systempropertiesdataexecutionprevention
Date and Time	timedate.cpl
Default Location	locationnotifications
Device Manager	devmgmt.msc
Device Manager	hdwwiz.cpl
Device Pairing Wizard	devicepairingwizard
Diagnostics Troubleshooting Wizard	msdt
Digitizer Calibration Tool	tabcal
DirectX Diagnostic Tool	dxdiag
Disk Cleanup	cleanmgr
Disk Defragmenter	dfrgui
Disk Management	diskmgmt.msc
Display	dpiscaling
Display Color Calibration	dccw
Display Switch	displayswitch
DPAPI Key Migration Wizard	dpapimig
Driver Verifier Manager	verifier
Ease of Access Center	utilman
EFS Wizard	rekeywiz
Event Viewer	eventvwr.msc
Fax Cover Page Editor	fxscover
File Signature Verification	sigverif
Font Viewer	fontview
Game Controllers	joy.cpl
Getting Started	gettingstarted
IExpress Wizard	iexpress
Getting Started	irprops.cpl
Install or Uninstall Display Languages	lusrmgr
Internet Explorer	iexplore
Internet Options	inetcpl.cpl
iSCSI Initiator Configuration Tool	iscsicpl
Language Pack Installer	lpksetup
Local Group Policy Editor	gpedit.msc
Local Security Policy	secpol.msc
Local Users and Groups	lusrmgr.msc
Location Activity	locationnotifications
Magnifier	magnify
Malicious Software Removal Tool	mrt
Manage Your File Encryption Certificates	rekeywiz
Math Input Panel	mip
Microsoft Management Console	mmc
Microsoft Support Diagnostic Tool	msdt
Mouse	main.cpl
NAP Client Configuration	napclcfg.msc
Narrator	narrator
Network Connections	ncpa.cpl
New Scan Wizard	wiaacmgr
Notepad	notepad
ODBC Data Source Administrator	odbcad32
ODBC Driver Configuration	odbcconf
On-Screen Keyboard	osk
Paint	mspaint
Pen and Touch	tabletpc.cpl
People Near Me	collab.cpl
Performance Monitor	perfmon.msc
Performance Options	systempropertiesperformance
Phone and Modem	telephon.cpl
Phone Dialer	dialer
Power Options	powercfg.cpl
Presentation Settings	presentationsettings
Print Management	printmanagement.msc
Printer Migration	printbrmui
Printer User Interface	printui
Private Character Editor	eudcedit
Problem Steps Recorder	psr
Programs and Features	appwiz.cpl
Protected Content Migration	dpapimig
Region and Language	intl.cpl
Registry Editor	regedit
Registry Editor 32	regedt32
Remote Access Phonebook	rasphone
Remote Desktop Connection	mstsc
Resource Monitor	resmon
Resultant Set of Policy	rsop.msc
SAM Lock Tool	syskey
Screen Resolution	desk.cpl
Securing the Windows Account Database	syskey
Services	services.msc
Set Program Access and Computer Defaults	computerdefaults
Share Creation Wizard	shrpubw
Shared Folders	fsmgmt.msc
Snipping Tool	snippingtool
Sound	mmsys.cpl
Sound recorder	soundrecorder
SQL Server Client Network Utility	cliconfg
Sticky Notes	stikynot
Stored User Names and Passwords	credwiz
Sync Center	mobsync
System Configuration	msconfig
System Configuration Editor	sysedit
System Information	msinfo32
System Properties	sysdm.cpl
System Properties (Advanced Tab)	systempropertiesadvanced
System Properties (Computer Name Tab)	systempropertiescomputername
System Properties (Hardware Tab)	systempropertieshardware
System Properties (Remote Tab)	systempropertiesremote
System Properties (System Protection Tab)	systempropertiesprotection
System Restore	rstrui
Task Manager	taskmgr
Task Scheduler	taskschd.msc
Trusted Platform Module (TPM) Management	tpm.msc
User Account Control Settings	useraccountcontrolsettings
Utility Manager	utilman
Version Reporter Applet	winver
Volume Mixer	sndvol
Windows Action Center	wscui.cpl
Windows Activation Client	slui
Windows Anytime Upgrade Results	windowsanytimeupgraderesults
Windows CardSpace	infocardcpl.cpl
Windows Disc Image Burning Tool	isoburn
Windows DVD Maker	dvdmaker
Windows Easy Transfer	migwiz
Windows Explorer	explorer
Windows Fax and Scan	wfs
Windows Features	optionalfeatures
Windows Firewall	firewall.cpl
Windows Firewall with Advanced Security	wf.msc
Windows Journal	journal
Windows Media Player	wmplayer
Windows Memory Diagnostic Scheduler	mdsched
Windows Mobility Center	mblctr
Windows Picture Acquisition Wizard	wiaacmgr
Windows PowerShell	powershell
Windows PowerShell ISE	powershell_ise
Windows Remote Assistance	msra
Windows Repair Disc	recdisc
Windows Script Host	wscript
Windows Update	wuapp
Windows Update Standalone Installer	wusa
Version Windows	winver
WMI Management	wmimgmt.msc
WordPad	write
XPS Viewer	xpsrchvw
Import to Windows Contacts	wabmig
Tablet PC Input Panel	tabtip
Windows Contacts	wab
Windows Firewall with Advanced Security	wf
Windows Help and Support	winhlp32
Windows Script Host	wscript
WMI Tester	wbemtest
Access Screen Resolution page	desk.cpl
Access Mouse properties	main.cpl
Access Windows Action Center	wscui.cpl
Access Network Adapters	ncpa.cpl
Access Power Option	powercfg.cpl
Access the Programs and Features Window	appwiz.cpl
Access the System Properties	sysdm.cpl
Access the Windows Firewall	firewall.cpl

Differences between batch processing and stream processing systems

To me a stream processing system:

• Computes a function of one data element, or a smallish window of recent data
• Computes something relatively simple
• Needs to complete each computation in near-real-time -- probably seconds at most
• Computations are generally independent
• Asynchronous - source of data doesn't interact with the stream processing directly, like by waiting for an answer

A batch processing system to me is just the general case, rather than a special type of processing, but I suppose you could say that a batch processing system:

• Has access to all data
• Might compute something big and complex
• Is generally more concerned with throughput than latency of individual components of the computation
• Has latency measured in minutes or more

I sometimes hear streaming used as a sort of synonym for real-time . Real-time stuff usually takes the form of needing to respond to an event in milliseconds, as in a synchronous API. This isn't streaming to me.

Batch processing is very efficient in processing high volume data. Where data is collected, entered to the system, processed and then results are produced in batches. Here time taken for the processing is not an issue. Batch jobs are configured to run without manual intervention, trained against entire data set at scale in order to produce output in the form of computational analyses and data files. Depending on the size of the data being processed and the computational power of the system, output can be delayed significantly.

In contrast, stream processing involves continual input and outcome of data. It emphasizes on the Velocity of the data. Data must be processed within small time period or near real time (keep in mind real time system and stream processing systems are different concepts which are sometimes used interchangeably, for details check this question What's the difference between real-time processing and stream processing?).  Streaming processing gives decision makers the ability to adjust to contingencies based on events and trends developing in real-time. 

As there are 3Vs of Big Data (Volume, Velocity, Variety). How I understand this is if your only concern is Volume of the data, then Batch processing is a way to go and if you have to take into consideration Velocity of data also (continuous data) and you need outcome within specific time limits(like in seconds or so) then Stream Processing Engines are there to help you.

(sources from internet)

Udemy cheating for free

Do you know udemy.com? A big online learning website, which had a lot of courses. Some courses are charged with high cost you can not afford.

I'm learning AWS SA, i did not find any useful and free stuff on internet. So i come to Udemy, register one account, and pay one course with  $199. 

To me, it's so a big number. I dive into that course with high priority. But one day, i want to watch all the course's video offline because of the fcking low network.

I found udemy-dl, which can download all video of mine. Suddenly, the lighting come across my mind, i think i could do something more than udemy-dl can do.

It take 2 day to rewrite udemy-dl to my own udemy-dl. Now, i can download any course from Udemy without charging fee.
You can reference my code here