mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-15 20:44:17 +01:00
70 lines
1.7 KiB
Markdown
70 lines
1.7 KiB
Markdown
## The *check-dns.ps1* Script
|
|
|
|
This PowerShell script measures and prints the DNS resolution speed by using 200 frequently used domain names.
|
|
|
|
## Parameters
|
|
```powershell
|
|
check-dns.ps1 [<CommonParameters>]
|
|
|
|
[<CommonParameters>]
|
|
This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
|
|
WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
|
|
```
|
|
|
|
## Example
|
|
```powershell
|
|
PS> ./check-dns
|
|
|
|
```
|
|
|
|
## Notes
|
|
Author: Markus Fleschutz | License: CC0
|
|
|
|
## Related Links
|
|
https://github.com/fleschutz/PowerShell
|
|
|
|
## Source Code
|
|
```powershell
|
|
<#
|
|
.SYNOPSIS
|
|
Checks the DNS resolution
|
|
.DESCRIPTION
|
|
This PowerShell script measures and prints the DNS resolution speed by using 200 frequently used domain names.
|
|
.EXAMPLE
|
|
PS> ./check-dns
|
|
.LINK
|
|
https://github.com/fleschutz/PowerShell
|
|
.NOTES
|
|
Author: Markus Fleschutz | License: CC0
|
|
#>
|
|
|
|
try {
|
|
Write-Progress "⏳ Step 1/2 - Reading from Data/frequent-domains.csv..."
|
|
$Table = Import-CSV "$PSScriptRoot/../Data/frequent-domains.csv"
|
|
$NumRows = $Table.Length
|
|
|
|
Write-Progress "⏳ Step 2/2 - Resolving $NumRows domains..."
|
|
$StopWatch = [system.diagnostics.stopwatch]::startNew()
|
|
if ($IsLinux) {
|
|
foreach($Row in $Table){$nop=dig $Row.Domain +short}
|
|
} else {
|
|
foreach($Row in $Table){$nop=Resolve-DNSName $Row.Domain}
|
|
}
|
|
|
|
[float]$Elapsed = $StopWatch.Elapsed.TotalSeconds
|
|
$Average = [math]::round($NumRows / $Elapsed, 1)
|
|
|
|
if ($Average -gt 10.0) {
|
|
"✅ DNS resolves $Average domains per second"
|
|
} else {
|
|
"⚠️ DNS resolves only $Average domains per second!"
|
|
}
|
|
exit 0 # success
|
|
} catch {
|
|
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
|
|
exit 1
|
|
}
|
|
```
|
|
|
|
*Generated by convert-ps2md.ps1 using the comment-based help of check-dns.ps1*
|