Easily hide error given by PS and show message - powershell

Question

im currently finishing my PS script to get the time from a list of servers and export them to a .txt file. Thing is that servers with connection problems gives just a PS error. I want that servers with connection issues get logged also and by just a message i.e "Server server name not reachable". Thanks a lot for your help!
cls
$server = Get-Content srvtime_list.txt
Foreach ($item in $server)
{
net time \\$item | find /I "Local time" >> srvtime_result.txt
}

Answer 1

I'd probably rewrite your code a bit:
Get-Content srvtime_list.txt |
ForEach-Object {
$server = $_
try {
$ErrorActionPreference = 'Stop'
(net time \\$_ 2>$null) -match 'time'
} catch { "Server $server not reachable" }
} |
Out-File -Encoding UTF8 srvtime_result.txt

Answer 2

There are other/better ways to get the time (as others suggested) but to answer your question:
You can suppress errors by redirecting the error stream to null.
Check the $LASTEXITCODE variable, any result other than 0 means the command did not completed successfully.
Get-Content srvtime_list.txt | Foreach-Object{
net time \\$_ 2>$null | find /I "Current time" >> srvtime_result.txt
if($LASTEXITCODE -eq 0)
{
$result >> srvtime_result.txt
}
else
{
"Server '$_' not reachable" >> srvtime_result.txt
}
}

Answer 3

I'd do something like this:
Get-Content srvtime_list.txt | %{
$a = Get-WmiObject -Class Win32_OperatingSystem -ComputerName $_ -erroraction 'silentlycontinue'
if ($a) { "$_ $($a.ConvertToDateTime($a.LocalDateTime))" } else { "Server $_ not reachable" }
} | Set-Content srvtime_result.txt

Answer 4

Use the Test-Connection cmdlet to verify that the remote system is reachable.
cls
$server = Get-Content srvtime_list.txt
Foreach ($item in $server)
{
if (test-connection $item) {
net time \\$item | find /I "Local time" >> srvtime_result.txt
} else {
"$item not reachable" | out-file errors.txt -append
}
}
But you can do this in pure Powershell, without resorting to net time - use WMI. This is untested as I don't have Windows handy at the moment, but it's at least 90% there.
cls
$server = Get-Content srvtime_list.txt
$ServerTimes = #();
Foreach ($item in $server)
{
if (test-connection $item) {
$ServerTimes += Get-WMIObject -computername $name win32_operatingsystem|select systemname,localdatetime
} else {
"$item not reachable" | out-file errors.txt -append
}
}
$ServerTimes |Out-File srvtime_result.txt