run_cmd_on_devices.ps1

# Execute Remote Command on Multiple Devices Script
param(
    [string]$IpListFile = "ip_list.txt",
    [Parameter(Mandatory=$true)]
    [string]$Username,
    [Parameter(Mandatory=$true)]
    [string]$Password,
    [string]$PlinkPath = ".\plink.exe",
    [Parameter(Mandatory=$true)]
    [string]$Command
)

# Check if plink.exe exists
if (!(Test-Path $PlinkPath)) {
    Write-Error "plink.exe not found at: $PlinkPath"
    Write-Host "You can:"
    Write-Host "1. Download plink.exe from https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html"
    Write-Host "2. Put the downloaded plink.exe file to the same path of this script"
    exit 1
}

# Check if IP list file exists
if (!(Test-Path $IpListFile)) {
    Write-Error "IP list file not found: $IpListFile"
    Write-Host "Please create a text file containing IP addresses, one per line"
    Write-Host "Example content:"
    Write-Host "192.168.1.100"
    Write-Host "192.168.1.101"
    Write-Host "192.168.1.102"
    exit 1
}

# Read IP list from file
try {
    $ip_list = Get-Content $IpListFile | Where-Object { $_.Trim() -ne "" }
    Write-Host "Read $($ip_list.Count) IP addresses from file" -ForegroundColor Blue
    Write-Host "Command to execute: $Command" -ForegroundColor Cyan
}
catch {
    Write-Error "Failed to read IP list file: $_"
    exit 1
}

# Process each IP address
foreach ($ip in $ip_list) {
    $ip = $ip.Trim()
    if ($ip -eq "") { continue }
    
    Write-Host "========== Executing on $ip ==========" -ForegroundColor Green
    
    # Execute SSH command
    try {
        Write-Host "Executing command: $Command" -ForegroundColor Yellow
        $command_output = & $PlinkPath -ssh $ip -l $Username -pw $Password -batch $Command 2>&1
        
        # Check if command executed successfully
        if ($LASTEXITCODE -ne 0) {
            $error_msg = ($command_output -join " ").Trim()
            Write-Error "SSH connection or command execution failed for $ip : $error_msg"
            exit 1
        }
        
        # Display output to console
        Write-Host "Command output:" -ForegroundColor Magenta
        $command_output | ForEach-Object { Write-Host "  $_" }
        Write-Host "✓ Command executed successfully on $ip" -ForegroundColor Green
    }
    catch {
        Write-Error "Exception occurred while processing $ip : $_"
        exit 1
    }
    
    Write-Host ""
}

Write-Host "Command executed successfully on all devices!" -ForegroundColor Green