function-Write-ErrorLog.ps1
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<#
.SYNOPSIS Writes a message into Warning stream and an error into a given log file. .DESCRIPTION Writes a message into Warning stream and an error into a given log file. This CMDlet should be used to document errors in a log, but not to suspend or stop script activity. .EXAMPLE PS> Write-ErrorLog -LogFilePath -Message "This is an error message" #> function Write-ErrorLog { [cmdletbinding()] param ( # Parameter help description [Parameter(Mandatory=$true)] [ValidateScript({ if (-not (Test-Path $_)) { throw "You need to create a log file first using Start-Log" } else { return $true } })] [string] $LogFilePath, # Parameter help description [Parameter(Mandatory)] [string] $Message ) $Prefix = "[$([DateTime]::Now)] Error: " Add-Content -Path $LogFilePath -Value ($Prefix + $Message) Write-Warning $Message -ErrorAction Continue } |