I am using powershell to perform a tracert command and putting the result into a variable.
$TraceResult = tracert $server
When using write-host the output looks fine on screen, which each hop on a new line.
Tracing route to fhotmail.com [65.55.39.10]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms BTHomeHub.home [192.168.50.1]
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
When I output the variable to a file using add-content the return characters are lost and the formatting looks terrible as it's on one line:
17/06/2014 14:48:26 Tracing route to fhotmail.com [64.4.6.100] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms BTHomeHub.home [192.168.50.1] 2 * * * Request timed out. 3 * * * Request timed out. 4 * * * Request timed out. 5 * * * Request timed out. 6 * * * Request timed out. 7 * * * Request timed out. 8 * * * Request timed out. 9 * * * Request timed out. 10 * * * Request timed out. 11 * * * Request timed out. 12 * * * Request timed out. 13 * * * Request timed out. 14 * * * Request timed out. 15 * * * Request timed out. 16 * * * Request timed out. 17 * * * Request timed out. 18 * * * Request timed out. 19 * * * Request timed out. 20 * * * Request timed out. 21 * * * Request timed out. 22 * * * Request timed out. 23 * * * Request timed out. 24 * * * Request timed out. 25 * * * Request timed out. 26 * * * Request timed out. 27 * * * Request timed out. 28 * * * Request timed out. 29 * * * Request timed out. 30 * * * Request timed out. Trace complete.
Any idea on where I'm going wrong?
$servers = "localhost","google.com","fhotmail.com"
$Logfile = "c:\temp\$(Get-Content env:computername).log" # Sets the logfile as c:\temp\[COMPUTERNAME].log
# Countdown function with progress bar
Function Start-Countdown
{
Param(
[Int32]$Seconds = 10,
[string]$Message = "Pausing for 10 seconds..."
)
ForEach ($Count in (1..$Seconds))
{ Write-Progress -Id 1 -Activity $Message -Status "Waiting for $Seconds seconds, $($Seconds - $Count) left" -PercentComplete (($Count / $Seconds) * 100)
Start-Sleep -Seconds 1
}
Write-Progress -Id 1 -Activity $Message -Status "Completed" -PercentComplete 100 -Completed
}
# Log Write Function to log a message with date and time (tab delimited)
Function LogWrite
{
Param ([string]$logstring)
Add-content $Logfile -value "$(get-date -UFormat '%d/%m/%Y') `t$(get-date -UFormat '%T') `t$logstring"
}
# Looping script to run ping tests, then countdown for a period, before repeating
while ($true) {
# Ping servers and perform tracert if not responding to ping
foreach ( $server in $servers ) {
write-Host "Pinging: $server" -ForegroundColor Green
if ((test-Connection -ComputerName $server -Count 2 -Quiet) -eq $true ) {
# Ping response received.
write-Host "Response Received Sucessfully [$server].`n" -ForegroundColor Green
}
else {
# Ping response failed, next perform trace route.
write-Host "Response FAILED [$server]." -ForegroundColor RED
LogWrite "Ping Response FAILED [$server]."
Write-Host "Traceroute: $server - $(get-date -UFormat '%d/%m/%Y - %T')" -ForegroundColor Yellow
$TraceResult = tracert $server
LogWrite $TraceResult
Write-Host "Traceroute Completed [$server]`n" -ForegroundColor Yellow
}
}
# Pause before repeating
Start-Countdown -Seconds 60 -Message "Pausing script before restarting tests. Use CTRL-C to Terminate."
}
The output of tracert isn't being handled by PowerShell as a single string but rather an array of strings (one per line) and it's trying to force them all into a single string (concatenating them, basically).
Assuming you're OK with output like this:
17/06/2014 16:54:07
Tracing route to SERVERNAME [IP]
over a maximum of 30 hops:
1 1 ms <1 ms <1 ms HOP1
2 1 ms <1 ms <1 ms IP
Trace complete.
You'll need to do this:
$TraceResult = tracert $server
LogWrite ($TraceResult -join "`r`n")
This will concatenate all the elements of the $TraceResult array into one string, with CRLF as the EOL marker.