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CPU affinity (System tuning)

Start command under Dos: (Start program)

start/affinity Hexadecimal Numeric program name
Application principle: Arrange the computer's number of cores. If the app is labeled 1. Mark 0 is not used. Finally, the 2 binary numbers are converted to 16 binary.
Implement and assign programs to different cores to run in order to achieve the effect of Windows downgrade


Common Operating systems:
Windows:desktop (desktop system), easy to operate.
Linux: (Unix-like) enterprise applications. Security with respect to Windows stability.
CentOS ubuntu redhat SuSE (Linux Enterprise Edition)
MacBook: Unix-like

Path vs Directory
Path: precise positioning

Directory: the folder in which you are located

DOS Command under window:
Open: win+r (open) input cmd
Help instruction name +/?

1. Dir: Show All Files
2.D: Toggle Drive Letter
3.tab: Full button
Shift+tab: Reverse operation.
4.CD Entering the catalogue
5.mkdir file name

6 Contents:
.. : Parent Directory
. : Current directory
7 Create file echo > file name
(If no this file will be created.) Here > is the overwrite operation. If the file exists and there is content to be overwritten)
Add content echo >> file name (> Overwrite action)
8 Delete Directory rmdir/q/s folder name
Delete File del file name
Optional parameters
-S recursion
-Q (quite) quiet
-F (Force) mandatory

9.move Mobile
Ipconfig view IP address
Ping Test network connectivity For example: Ping www.baidu.com
12. Configure the Hosts file to bypass DNS resolution and directly look for IP addresses.
Hosts file address C:\Windows\System32\drivers\etc\hosts
Usage: Add directly to hosts ' Hosts file:
Set list environment variables

CLS (Clear screen) clear
15. Environment variable configuration. Win7 64-bit flagship system,
1. Exit DOS


In-system: Range
Binary 0 1
Octal (0) 0-7
16 binary (0x) 0-f

Joke

OCT (octal number) = = Dec (Decimal number) 25

In Western countries, the Oct (31), October 31 is Halloween, Dec (25), December 25 is Christmas,
So there's a joke: Programmers can't tell Christmas from Halloween.
(octal 31 is converted to 10 binary equals decimal 25)

Shortcut keys:
CTRL + C V x a Z y S
Windows:
win+ E//Turn on my Computer
win+ R
Win + D//Open Desktop
Services.msc//Services
Notepad//Notepad
SHIFT + TAB//Reverse action
Calc//Calculator
MSPaint//Drawing
Regedit//Registration Form
End//Position cursor to end of line
Home//Position cursor to beginning of line
Shift +end//Check the current position to the industry character
CTRL + ARROW keys//progression by Word

Learn the basics of Java computer literacy