Windows_Commands

Essential Windows Commands for System Administration

Certificate Management in Windows Java

Generate a self-signed certificate:

bash
keytool -genkey -keyalg RSA -alias selfsigned -keystore keystore.jks -storepass password -validity 360 -keysize 2048

Update certificate in Windows Java:

bash
keytool -keystore mycacerts -storepass changeit -importcert -file ..\..\jre1.8.0_202\lib\security\cacerts

System Information and Network Commands

Display Driver Information:

dxdiagba

View All Open Ports:

netstat -a/-nap/-e/-n/-aon/-an/-b

Check Specific Port:

bnetstat -o -n -a | findstr 0.0:8080

Telnet to Check Port:

bash
telnet IP port

Trace Route:

bash
tracert IP

Reset Windows Firewall:

bash
netsh firewall reset

Kill Process by Process ID:

bash
taskkill /f /pid processID

Unshare Drive:

bas
net share D$ /delete

System Information:

bash
systeminfo 

Retrieve Wifi Password:

netsh wlan show profile name="Wi-Fi name" key=clear 


  C:\Windows\System32>netsh wlan show wlanreport

    Generating report ...
    Querying WLAN Events ...
    Querying NCSI Events ...
    Querying NDIS Events ...
    Querying EAP Events ...
    Querying WCM Events ...
    Querying Kernel Events ...
    Querying System Events ...
    Running ipconfig ...
    Running netsh wlan show all ...
    Querying Wireless Profiles ...
    Querying System and User Certificates ...
    Querying User Info ...
    Querying Network Devices ...

Report written to: C:\ProgramData\Microsoft\Windows\WlanReport\wlan-report-latest.html
Open this report on browser. it looks like :


Improve System performance/Health :
checks for corruption and repairs damaged system files
C:\Windows\System32>  dism /online /cleanup-image /restorehealth 
C:\Windows\System32>   sfc /scannow  

File Operations

Create File:

bash
copy con filename.txt

Create Multiple Empty Files:

bash
copy null filename.txt > null

Delete File:

bash
del <fileName>

Delete Empty Folder:

bash
rmdir <folderName>

Delete Non-Empty Folder and Subfolders:

bash
rmdir /q/s <folderName>

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Oracle Database Commands

Backup Database without Data:

bash
exp userid=uname/pass@dbname file=e:\full_ddl.dmp rows=n

Backup Specific Table:

bash
exp userid=uname/pass@dbname tables=tbl_name file=e:\dump.dmp

---

MySQL Database Commands

Dump All Procedures without Data:

bash
mysqldump -u root -p -R --no-data > e:/dump.sql

Dump All Table Schemas without Data:

bash
mysqldump -u root -p -d --no-data > e:/dump.sql

Only Data Backup:

bash
mysqldump -u username -ppassword no-create-info database_name > dump.sql

Change MySQL Root Password:

bash
mysqladmin -u root password NEWPASSWORD

MySQL Admin Change Password:

bash
mysqladmin -u root -p'oldpassword' password newpass

MySQL Query Output to XML:

bash
mysql -u root -p --xml -e "mysql command"

Redirect MySQL Query Output to File:

bash
mysql> tee on
mysql> tee filename
mysql> query
mysql> tee off

Get Last Month with Year:

sql
SELECT date_format(date_sub(now(), INTERVAL 1 MONTH),'%Y%m');

---

Android Development Commands

Install APK on Simulator:

bash
/androidSDK/platform-tools/adb install apkfilename

View Connected Devices:

bash
adb devices or adb shell

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Reserved Ports and Protocols

Port	Protocol
7	Echo
21	FTP
23	Telnet
25	SMTP
53	DNS
70	Gopher
79	Finger
107	RTelnet
110	POP3
119	NNTP
139	NetBIOS
143	IMAP
194	IRC
3128, 8080, 10000, and etc.	Various