TestRepo/PowerShell_SysAdmin_Command_Gui.md

# Windows PowerShell SysAdmin Command Guide

A focused command reference for **Windows System Administrators**
performing real operational work: remote management, troubleshooting,
file transfer, services, networking, and automation.

------------------------------------------------------------------------

# Table of Contents

1.  Remote Management
2.  Copying Files to Remote Systems
3.  Remote Command Execution
4.  Remote Troubleshooting
5.  Service Management
6.  Process Management
7.  Event Log Investigation
8.  Network Troubleshooting
9.  Disk and Storage
10. Active Directory Basics
11. Performance Troubleshooting
12. Useful One‑Liners

------------------------------------------------------------------------

# 1. Remote Management

## Enable PowerShell Remoting

Run on the target machine once:

``` powershell
Enable-PSRemoting -Force
```

## Connect to a remote system

``` powershell
Enter-PSSession -ComputerName SERVER01
```

Exit session:

``` powershell
Exit-PSSession
```

## Run command on remote system

``` powershell
Invoke-Command -ComputerName SERVER01 -ScriptBlock { Get-Service }
```

Multiple servers:

``` powershell
Invoke-Command -ComputerName SERVER01,SERVER02 -ScriptBlock { hostname }
```

## Run script remotely

``` powershell
Invoke-Command -ComputerName SERVER01 -FilePath C:\Scripts\patch.ps1
```

------------------------------------------------------------------------

# 2. Copy Files to Remote Systems

## Copy file to remote system

``` powershell
Copy-Item file.txt -Destination \\SERVER01\C$\Temp
```

## Copy file using PowerShell session

``` powershell
$s = New-PSSession SERVER01
Copy-Item file.txt -Destination C:\Temp -ToSession $s
```

## Copy file from remote computer

``` powershell
Copy-Item C:\Temp\log.txt -FromSession $s -Destination C:\Logs
```

------------------------------------------------------------------------

# 3. Remote Command Execution

## Restart remote computer

``` powershell
Restart-Computer SERVER01 -Force
```

## Shutdown remote system

``` powershell
Stop-Computer SERVER01
```

## Check uptime

``` powershell
Get-CimInstance Win32_OperatingSystem -ComputerName SERVER01 |
Select LastBootUpTime
```

------------------------------------------------------------------------

# 4. Remote Troubleshooting

## Check services remotely

``` powershell
Get-Service -ComputerName SERVER01
```

## Check processes remotely

``` powershell
Get-Process -ComputerName SERVER01
```

## Check disk space

``` powershell
Get-CimInstance Win32_LogicalDisk -ComputerName SERVER01 |
Select DeviceID,FreeSpace,Size
```

## Check installed updates

``` powershell
Get-HotFix -ComputerName SERVER01
```

------------------------------------------------------------------------

# 5. Service Management

``` powershell
Get-Service
Start-Service spooler
Stop-Service spooler
Restart-Service spooler
```

Remote service:

``` powershell
Get-Service -ComputerName SERVER01 -Name spooler
```

------------------------------------------------------------------------

# 6. Process Management

``` powershell
Get-Process
Get-Process chrome
Stop-Process -Name chrome -Force
```

Remote process kill:

``` powershell
Invoke-Command -ComputerName SERVER01 -ScriptBlock { Stop-Process -Name notepad }
```

------------------------------------------------------------------------

# 7. Event Log Investigation

Recent errors:

``` powershell
Get-WinEvent -LogName System -MaxEvents 50
```

Remote event logs:

``` powershell
Get-WinEvent -ComputerName SERVER01 -LogName System -MaxEvents 20
```

Find service failures:

``` powershell
Get-WinEvent -FilterHashtable @{
LogName='System'
Level=2
}
```

------------------------------------------------------------------------

# 8. Network Troubleshooting

``` powershell
Test-Connection SERVER01
Test-NetConnection SERVER01 -Port 3389
Resolve-DnsName server01.domain.com
Get-NetTCPConnection -State Listen
```

Check network adapters:

``` powershell
Get-NetAdapter
```

Check DNS servers:

``` powershell
Get-DnsClientServerAddress
```

------------------------------------------------------------------------

# 9. Disk and Storage

``` powershell
Get-Disk
Get-Volume
Get-Partition
```

Find large files:

``` powershell
Get-ChildItem C:\ -Recurse -ErrorAction SilentlyContinue |
Sort Length -Descending |
Select -First 20
```

------------------------------------------------------------------------

# 10. Active Directory Basics

Find computer:

``` powershell
Get-ADComputer SERVER01
```

Find user:

``` powershell
Get-ADUser jsmith
```

List computers in OU:

``` powershell
Get-ADComputer -SearchBase "OU=Servers,DC=domain,DC=com" -Filter *
```

------------------------------------------------------------------------

# 11. Performance Troubleshooting

Top CPU processes:

``` powershell
Get-Process | Sort CPU -Descending | Select -First 10
```

Memory usage:

``` powershell
Get-Process | Sort WS -Descending | Select -First 10
```

------------------------------------------------------------------------

# 12. Useful One‑Liners

Find stopped automatic services:

``` powershell
Get-Service | Where {$_.StartType -eq 'Automatic' -and $_.Status -ne 'Running'}
```

Find largest folders:

``` powershell
Get-ChildItem C:\ -Directory | Sort Length -Descending
```

Check listening ports:

``` powershell
Get-NetTCPConnection -State Listen
```