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PowerShell is a powerful scripting language and command-line shell designed for system administration and automation. Below is a comprehensive guide to essential PowerShell 3.0 commands, syntax, and practical examples.
You Should Know:
Basic PowerShell Commands
1. Get-Command – Lists all available cmdlets.
Get-Command
2. Get-Help – Displays help information for cmdlets.
Get-Help Get-Process
3. Get-Process – Lists all running processes.
Get-Process
- Stop-Process – Terminates a process by name or ID.
Stop-Process -Name "notepad" -Force
5. Get-Service – Displays all system services.
Get-Service
6. Start-Service / Stop-Service – Manages services.
Start-Service -Name "Spooler" Stop-Service -Name "Spooler"
File and Directory Operations
- Get-ChildItem – Lists files and directories (similar to `dir` or
ls).Get-ChildItem C:\
8. Copy-Item – Copies files or folders.
Copy-Item "C:\file.txt" -Destination "D:\backup\"
9. Remove-Item – Deletes files or directories.
Remove-Item "C:\temp\oldfile.txt" -Force
- New-Item – Creates a new file or directory.
New-Item -ItemType File -Path "C:\newfile.txt"
System Management
11. Get-WmiObject – Retrieves system information via WMI.
Get-WmiObject -Class Win32_OperatingSystem
12. Restart-Computer – Reboots the system.
Restart-Computer -Force
13. Test-NetConnection – Checks network connectivity (replaces `ping`).
Test-NetConnection -ComputerName "google.com"
Scripting & Automation
- ForEach-Object – Processes each item in a pipeline.
1..10 | ForEach-Object { Write-Output "Number: $_" }
15. If-Else Conditions – Basic conditional logic.
$value = 10
if ($value -gt 5) { Write-Output "Greater than 5" } else { Write-Output "Less than 5" }
16. Functions – Creating reusable code blocks.
function Get-Square { param($num) $num $num }
Get-Square -num 5
Security-Related Cmdlets
- Get-Acl – Retrieves security descriptors of files/registry keys.
Get-Acl "C:\Windows\System32"
18. Set-ExecutionPolicy – Configures script execution permissions.
Set-ExecutionPolicy RemoteSigned
19. Get-NetFirewallRule – Lists firewall rules.
Get-NetFirewallRule | Where-Object { $_.Enabled -eq $true }
What Undercode Say
PowerShell remains a critical tool for IT professionals, enabling automation, system management, and security auditing. Mastering these commands enhances productivity and system control. For further learning, explore Microsoft’s official PowerShell documentation.
Expected Output:
- A structured PowerShell 3.0 cheat sheet.
- Practical commands for file management, system administration, and scripting.
- Security-focused cmdlets for auditing and configuration.
References:
Reported By: Https: – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
