🖥️ System Information & Performance

1. Get-ComputerInfo — Displays detailed system information.
2. Get-Process — Lists all running processes.
3. Get-Service — Shows all services and their current status.
4. Get-WmiObject win32_bios — Returns BIOS version and related info.
5. Get-WmiObject Win32_ComputerSystem — Displays system model, manufacturer, and domain.
6. Get-CimInstance -ClassName Win32_OperatingSystem — Shows OS version and build info.
7. Get-HotFix — Lists installed Windows updates.
8. systeminfo — Displays full system details including install date, RAM, and domain.
9. Get-EventLog -LogName System -Newest 50 — Shows the 50 most recent system event logs.
10. Get-ItemProperty “HKLM:\Software\Microsoft\Windows NT\CurrentVersion” — Displays Windows version from the registry.
11. Get-Host — Displays information about the PowerShell host environment.
12. Get-Uptime — Shows how long the system has been running.
13. Get-EventLog -List — Lists all available event logs.
14. Clear-EventLog -LogName Application — Clears the Application event log.
15. Get-PSDrive — Lists logical drives, including registry and environment.
16. Get-Location — Displays the current working directory.
17. Measure-Command { Get-Process } — Measures how long a command takes to run.
18. Get-History — Displays session command history.
19. Clear-History — Clears command history from the current session.
20. Get-LogProperties — Displays log configuration properties for a source.

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🔐 User & Security Management

21. Get-LocalUser — Lists all local user accounts.
22. New-LocalUser -Name “testuser” -Password (Read-Host -AsSecureString) — Creates a new local user.
23. Add-LocalGroupMember -Group “Administrators” -Member “testuser” — Adds a user to the Administrators group.
24. Remove-LocalUser -Name “testuser” — Deletes the specified user.
25. Set-LocalUser -Name “testuser” -PasswordNeverExpires $true — Prevents the user’s password from expiring.
26. Get-LocalGroup — Lists all local groups on the machine.
27. Get-LocalGroupMember -Group “Administrators” — Lists members of the Administrators group.
28. Enable-LocalUser -Name “Guest” — Enables the Guest account.
29. Disable-LocalUser -Name “Guest” — Disables the Guest account.
30. net user — Lists all users on the system using classic CMD.

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📦 Software & Applications

31. Get-Package — Lists all installed software packages.
32. Get-AppxPackage — Lists installed Microsoft Store apps.
33. Get-AppxPackage -AllUsers — Lists apps for all user profiles.
34. Remove-AppxPackage -Package “Microsoft.YourPhone” — Removes the Your Phone app.
35. Install-PackageProvider -Name NuGet -Force — Installs NuGet for module management.
36. Get-WmiObject -Class Win32_Product — Lists all installed applications (slow but detailed).
37. winget list — Lists all installed software using Winget.
38. winget install firefox — Installs Firefox via Windows Package Manager.
39. Get-PackageSource — Lists registered software repositories.
40. Update-Module — Updates all installed PowerShell modules.

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📁 File & Folder Management

41. Get-ChildItem — Lists files and folders in the current directory.
42. Get-ChildItem -Recurse — Lists all files and folders recursively.
43. Copy-Item -Path “C:\Source” -Destination “D:\Backup” -Recurse — Copies folders recursively.
44. Move-Item -Path “file.txt” -Destination “C:\NewFolder” — Moves a file.
45. Remove-Item -Path “C:\Temp\oldfile.txt” — Deletes a file.
46. New-Item -ItemType Directory -Path “C:\Reports” — Creates a new folder.
47. Get-Content C:\file.txt — Displays contents of a file.
48. Set-Content C:\file.txt “Hello World” — Replaces file content with new text.
49. Add-Content C:\file.txt “New Line” — Appends text to a file.
50. Get-FileHash C:\file.txt — Generates a hash of a file.

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🌐 Networking

51. Test-Connection google.com — Pings a host and displays response time.
52. Resolve-DnsName example.com — Resolves a domain name to IP.
53. Get-NetIPAddress — Shows all configured IP addresses.
54. Get-NetAdapter — Lists all network adapters.
55. Get-NetTCPConnection — Displays active TCP connections.
56. Get-NetFirewallProfile — Shows firewall status for domain/private/public.
57. Get-NetRoute — Displays the routing table.
58. Get-NetIPConfiguration — Displays full IP config.
59. Set-DnsClientServerAddress -InterfaceAlias “Ethernet” -ServerAddresses “8.8.8.8”,”1.1.1.1″ — Sets DNS servers.
60. ipconfig /all — Displays full network configuration (legacy).

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📅 Tasks & Services

61. Get-ScheduledTask — Lists all scheduled tasks.
62. Register-ScheduledTask — Creates a new scheduled task.
63. Unregister-ScheduledTask — Deletes a scheduled task.
64. Start-ScheduledTask -TaskName “Cleanup” — Manually runs a scheduled task.
65. Get-Service bits — Displays the status of the BITS service.
66. Start-Service wuauserv — Starts the Windows Update service.
67. Stop-Service wuauserv — Stops the Windows Update service.
68. Restart-Service spooler — Restarts the Print Spooler service.
69. Set-Service -Name bits -StartupType Manual — Changes the service startup type.
70. sc query — Shows service status using classic command-line.

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🧰 Clipboard, Registry & Utilities

71. Get-Clipboard — Retrieves clipboard contents.
72. Set-Clipboard -Value “Copied text” — Sets clipboard contents.
73. New-Item -Path “HKCU:\Software\Test” -Force — Creates a registry key.
74. Remove-Item -Path “HKCU:\Software\Test” -Recurse — Deletes a registry key.
75. Get-ItemProperty -Path “HKCU:\Software\Test” — Displays registry key properties.
76. Set-ItemProperty -Path “HKCU:\Software\Test” -Name “Setting” -Value “123” — Sets a registry value.
77. Get-Variable — Lists all PowerShell variables in the session.
78. Clear-Variable -Name “varName” — Clears the specified variable.
79. Get-Alias — Lists all aliases for PowerShell commands.
80. New-Alias -Name list -Value Get-ChildItem — Creates a command shortcut.

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🔄 Automation, Scripting & Loops

81. For ($i = 1; $i -le 5; $i++) { Write-Output “Line $i” } — Loops and prints 5 lines.
82. $files = Get-ChildItem C:\Logs — Stores files in a variable.
83. foreach ($file in $files) { Write-Output $file.Name } — Loops through a file list.
84. if (Test-Path C:\temp.txt) { Remove-Item C:\temp.txt } — Deletes a file if it exists.
85. Try { Get-Item C:\missing.txt } Catch { Write-Output “Error!” } — Try/catch for errors.
86. Start-Sleep -Seconds 5 — Pauses the script for 5 seconds.
87. Read-Host “Enter your name” — Prompts user input.
88. Write-Output “Hello, world” — Outputs text to the console.
89. Out-File -FilePath C:\log.txt — Saves output to a text file.
90. Get-Command — Lists all available commands in PowerShell.

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🧪 Troubleshooting & Diagnostics

91. Get-WindowsUpdateLog — Collects and converts the Windows Update log.
92. sfc /scannow — Scans for and repairs corrupted system files.
93. DISM /Online /Cleanup-Image /RestoreHealth — Repairs Windows image files.
94. Get-EventLog -LogName Application -Newest 20 — Shows the latest application logs.
95. Get-EventLog -LogName Security -EntryType FailureAudit — Filters failed login attempts.
96. ping 8.8.8.8 — Tests basic internet connectivity.
97. tracert google.com — Traces the path to a host.
98. Get-Content “C:\Windows\Logs\CBS\CBS.log” -Tail 50 — Shows the latest lines from the CBS log.
99. Get-WindowsErrorReporting — Displays Windows error reporting configuration.
100. Get-Disk — Lists all connected disks and partitions.

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Conclusion:
This list of 100 PowerShell commands will help you navigate the Windows operating system like a pro. From managing users to automating tasks and digging into diagnostics, these commands are essential for anyone serious about mastering Windows with PowerShell.