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🥦 One 、 Permeate common DOS command

1.cd Switch the current directory

cd path ：path It's the path , You can switch to the corresponding path . for example , You want to enter Program Files Catalog ：
cd . . : The last two dots indicate that you are going back to the previous Directory

cd /: Indicates that no matter in which directory , With this command, you can immediately return to the root directory

2.dir（ List disk catalog files ）

Use dir The command can list all or specified files and directories on the disk , The display contains Volume label 、 file name 、 file size 、 Document creation date and time 、 Directory name 、 Disk space left etc. . The syntax is as follows ：

dir [ Disk character ] [ route ] [ file name ] [/P] [/W] [/A: attribute ]

The function of each parameter ：

• /P: Pause the display when more than one screen of information is displayed , Until you press any key to continue to display .
• /W: Displays the file and directory names in a horizontal arrangement , Each row 5 individual , But the file size and creation date are not displayed .
• /A： attribute ： Show only files with specified properties , Without this parameter , Show all files except system and implied files , Can be specified as the following ：

• /AS: Display information about system files ;
• / AH: Show information about hidden files ;
• / AR： Displays information about read-only files ;
• / AA: Display the information of the archive ;
• / AD: Display directory information .

Specific steps :
View the file information in the current directory ：

see c Directory of all files on disk ：

View hidden files ：

Be careful ：windows Case sensitive ！

3.ping（ Check the computer connection status ）

ping The order is TCP/IP One of the most commonly used commands in , It is mainly used to check whether the network is normal or the speed of network connection .
The specific steps are as follows ：
ping Command to determine the operating system type of the computer ： By returning to the package TTL Value judgment of .TTL(Time To Live) When we are using ping On command , The result will be returned with TTL value . The meaning of this thing is actually Time To Live, A message that can be in a network ’ Survive ’ The limitation of . When a message is relayed over the network , Time exceeds that limit , The last routing point to receive the message ’ Will throw it away , Instead of forwarding . Later, the time limit was changed to the hop limit , When a message is relayed over the network , Every time I pass by ‘‘ Routing point ’, Just put this preset TTL Value minus 1, Until the last TTL=1 The times were thrown away , No forwarding down .
therefore TTL Field values can help us identify the type of operating system :

LINUX 64
Windows 2000/NT/XP/7/10: 64~128（ But there are special circumstances , image TTL=64 Sometimes it's Linux, We should draw a conclusion in combination with other judgment methods , We'll talk about this next time ）
WINDOwS series ：32
UNIX series ：128~255

Enter... In the command prompt window ping 192.168.202.133 -t -l 128 command , It can continuously send a large number of data packets to the host ：

Judge whether the computer is connected to the outside world ：ping www.baidu.com

Analyze a ip The computer name of the address ping -a 192.168.202.133

4.net（ Query network status and shared resources ）

Query which computers are enabled on this computer windows service ：net start

5.netstat（ Display network connection information ）

netstat The command is mainly used to display the information of network connection , Includes displaying the active TCP Connect 、 Router and network interface information , It's a monitor TCP/IP The Internet is a very useful tool , It can let users know which network connections in the system are normal at present .
netstat /?: Get help

netstat -a: Show all connections and listening ports ：

netstat -r : Show routing information ：

Check the rest when you need it , I won't show them one by one .

6.tracert（ Check the network routing node ）

Use tracert The command can view the information of routing nodes in the network , The most common use is in tracert Append a parameter after the command , Indicates to detect and view the routing nodes experienced by the current host , Suitable for large-scale network testing . The syntax format of the command is as follows :

tracert [-d][-h MaximumHops] [-j Hostlist] [-w Timeout] [TargetName]

among , The meaning of each parameter is as follows ：

(1)-d: Prevent resolving the name of the target host , Can speed up the display tracert The result of the order .
(2) -h MaximumHops: Specify the maximum number of hops to search to the target address , The default is 30 Jump points .
(3) -j Hostlist: Release the source route according to the address in the host list .
(4) -W Timeout: Specify the timeout interval , The default unit is milliseconds .
(5) TargetName: Specify the target computer .

see www.baidu.com Routing and network connection of the Bureau ：

7.tasklist（ Display host process information ）

Taklist The command is used to display all processes running on a local or remote computer , With multiple execution parameters .Tasklist The format of the command is as follows :

Tasklist [/s system [ /u username[/p[password]]]][/m [module] | /SVC / V ][/fi filter][/fo format] [/nh]

utilize Tasklist The command can view the processes in the machine and the services provided by each process ：

View this machine svchost.exe Services provided ：

Check which processes in the local system called shell32.dll Module file ：

8.sfc（ Scan and fix system errors ）

sfc The main function of the command is to scan all protected system files and complete the repair work . The syntax format of the command is as follows :

sfc"/scannow""Iscanonce""/scanboot""/revert""/purgecache""/cachesize=x"

among , The meaning of each parameter is as follows .

(1) /scannow: Scan all protected system files now .
(2) /scanonce: Next time it starts , Scan all protected system files .
(3) /scanboot: Every time it starts , Scan all protected system files .
(4) /revert: Return the scan to the default settings .
(5) /purgecache: Clear file cache .
(6) /cachesize- X: Set the file cache size .

Here is the most commonly used sfc/scannow For example , The specific operation steps are as follows :
Right click “ Start ” Button , Choose... From the shortcut menu that pops up “ Command prompt ( Administrators )” Options , As shown in the figure below .

Choice is , enter ：

Input ：sfc/scannow enter ： Start automatic scanning system , It will take a little time . If a damaged system file is found, it will be repaired automatically , And display the repaired information , Here's the picture ：

🥦 Two 、 Practice

1. Use the command to execute （ Clear system garbage files ）

Quickly clean up the garbage files in the computer by batch processing files , Steps are as follows ：
Open Notepad , Enter the code ： Rename it to delete.bat

@echo off
echo Cleaning system garbage files , Please wait a moment ......
del /f /s /q %systemdrive%\*.tmp
del /f /s /q %systemdrive%\*._mp
del /f /s /q %systemdrive%\*.log
del /f /s /q %systemdrive%\*.gid
del /f /s /q %systemdrive%\*.chk
del /f /s /q %systemdrive%\*.old
del /f /s /q %systemdrive%\recycled\*.*

del /f /s /q %windir%\*.bak
del /f /s /q %windir%\prefetch\*.*
rd /s /q %windir%\temp & md %windir%\temp

del /f /q %userprofile%\cookies\*.*
del /f /q %userprofile%\recent\*.*


del /f /s /q"Suserprofile Number \LocalSettings\Temporary Internet Files\*.*" 
del/f /s /q“userprofile&\LocalSettings.\Temp\* .*”
del / f /s /q "%userprofile%\recent\*.*
echo Garbage cleaning is complete !
echo. & pause

stay dos Run in the window ：

2. Use shutdown command （ Realize timing shutdown ）

Enter... In the command prompt window ：shutdown /s /t 30


Cancel shutdown ：shutdown /a

3. Turn off the computer by sliding the mouse

Press Win+R key , Enter in the input box ：C:\Windows\System32\SlideToShutdown.exe

Slide the mouse down to turn off the computer , Cancel up .

🥦 3、 ... and 、 Conclusion

     For you , Three thousand lights , For you , Flowers bloom all over the city , For you , invincible ！
                                                                         ———— Huacheng bag