Start-Watch.ps1
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.SYNOPSIS Watch a process in a loop for updated output. .DESCRIPTION Watch a process in a loop for updated output. This is an equivalent of the linux watch command. .NOTES Author: John Rizzo @johnrizzo1 Modified by: Jason Wasser @wasserja Created: 6/12/2014 Modified: 5/19/2017 10:40:18 AM .EXAMPLE Start-Watch -Interval 5 -Command 'netstat -an | Select-String :123' Every 2s: netstat -an | Select-String :123 Friday, May 19, 2017 10:27:01 AM UDP 0.0.0.0:123 *:* UDP [::]:123 *:* Watch netstat for port 123 access .EXAMPLE Start-Watch -Interval 5 -Command 'netstat -an | Select-String SYN' Every 5s: netstat -an | Select-String SYN Friday, May 19, 2017 10:41:45 AM TCP 10.111.161.155:59105 172.17.55.13:3333 SYN_SENT .EXAMPLE Start-Watch -Interval 10 -Command 'Get-ChildItem -Path C:\Logs' Watch a directory for new files. .PARAMETER Interval Interval in seconds that the command should be repeated. .PARAMETER Command The command that you want to repeat every $Interval seconds. The command MUST be wrapped in single or double quotes. .LINK http://johnrizzo.net/powershell-watch-script-command/ .LINK http://mrautomaton.com #> function Start-Watch { [CmdletBinding(SupportsShouldProcess = $True, ConfirmImpact = 'High')] [Alias('watch')] param ( [Parameter(Mandatory = $False, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $True)] [alias('n')] [int]$Interval = 10, [Parameter(Mandatory = $True, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $True)] [string]$Command ) process { $cmd = [scriptblock]::Create($command) While ($True) { Clear-Host Write-Host "Every $Interval`s: $Command `t$(Get-Date -Format F) `n" -ForegroundColor Green $cmd.Invoke() Start-Sleep -Seconds $Interval } } } |