Catch the error in to a log file

Question

Hi Team,
Created the script for testing the server online or offline, Could you please tell me how to catch the error in to a file
Try
$Result = Test-Connection -count 1 -computer (Get-Content ServerName.txt)  -ErrorAction "Continue"
Catch
   $Result = New-Object PSCustomObject -Property @{
            TimeStamp = Get-Date
            __Server = $env:COMPUTERNAME
            Address = $Computer
            Protocol = ""
            ResponseTime = "Failed"
$Result | Select TimeStamp,__Server,Address,ProtocolAddress,ResponseTime | ft -AutoSize

Answer 1

As mjolinor pointed, you should change the -ErrorAction to Stop to make the control flow into catch block when error occurs. Just change alone is not sufficient because, the control will go to catch block if any of the computer in servername.txt gives error,
and it will not go back to next computer in your text file perform the ping.
So try chaning the code as shown below.
$Outarr = @()
foreach($Comp in (Get-Content C:\temp\servers.txt)) {
Try {
$Result = Test-Connection -count 1 -computer $Comp -ErrorAction stop
Catch {
$Result = New-Object PSCustomObject -Property @{
TimeStamp = Get-Date
__Server = $env:COMPUTERNAME
Address = $Comp
Protocol = ""
ResponseTime = "Failed"
$Outarr +=$Result
$Outarr| Select TimeStamp,__Server,Address,ProtocolAddress,ResponseTime | ft -AutoSize
Hope this helps.
Thanks,
Sitaram Pamarthi
Blog : http://techibee.com
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You can simplify that to:
$Outarr =
foreach($Comp in (Get-Content C:\temp\servers.txt)) {
Try {
Test-Connection -count 1 -computer $Comp -ErrorAction stop
Catch {
[PSCustomObject]@{
TimeStamp = Get-Date
__Server = $env:COMPUTERNAME
Address = $Comp
Protocol = ""
ResponseTime = "Failed"
$Outarr | ft -AutoSize
The [PSCustomObject] type accelerator will take the hash table as a constructor, and coerce it to an [ordered] hash table, so the properties will stay in the same order they were declared.  That eliminates the need to use Select-Object afterward to
get them back into the right order.
[string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "