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--- software:os:windows:powershell [2023/09/09 02:38]
charon створено
+++ software:os:windows:powershell [2025/12/30 13:13] (поточний)
charon
@@ Рядок 6: / Рядок 6: @@
 You can check which versions are available with
   winget search Microsoft.PowerShell
+===== How to run new PowerShell =====
+New PowerShell will be installed additionally to existing PS. In Terminal after restart you will find new profile:
+  * Windows PowerShell - old profile, PS 5.1
+  * PowerShell - new profile, PS 7.*
+===== How to find PowerShell version =====
+You can always find which PS version you run by running
+  get-host
+===== How to analyze system performance with PowerShell =====
+Check who uses CPU:
+  Get-Process | Sort-Object -Descending CPU | Select-Object -First 20
+Check who uses memory:
+  Get-Process | Sort-Object WorkingSet64 -Descending |
+  Select-Object Name, @{Name='Memory (MB)';Expression={[math]::Round($_.WorkingSet64/1MB,2)}} |
+  Select-Object -First 15
+Quick memory overview (data in kilobytes):
+  Get-WmiObject Win32_OperatingSystem | Select-Object TotalVisibleMemorySize, FreePhysicalMemory
+Calculate free memory percentage:
+  $os = Get-WmiObject Win32_OperatingSystem
+  $pctFree = [math]::Round(($os.FreePhysicalMemory / $os.TotalVisibleMemorySize) * 100, 2)
+  Write-Host "Memory Utilization: $pctFree% Free"
+Get 50 last messages from system EventLog:
+  Get-EventLog -LogName System -EntryType Error, Warning -Newest 50
+Show uptime (old Windows versions):
+  (New-TimeSpan -Start (Get-CimInstance Win32_OperatingSystem).LastBootUpTime -End (Get-Date))
+===== Working with files and folders =====
+[[software:os:windows:powershell:files|How to work with files and folders]]

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