Hosts file - add a record
We’ve seen how to read the Hosts file – this is how we add a record
function add-hostfilecontent {
[CmdletBinding(SupportsShouldProcess=$true)]
param (
[parameter(Mandatory=$true)]
[ValidatePattern("\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b")]
[string]$IPAddress,
[parameter(Mandatory=$true)]
[string]$computer
)
$file = Join-Path -Path $($env:windir) -ChildPath "system32\drivers\etc\hosts"
if (-not (Test-Path -Path $file)){
Throw "Hosts file not found"
}
$data = Get-Content -Path $file
$data += "$IPAddress $computer"
Set-Content -Value $data -Path $file -Force -Encoding ASCII
}
Take an IP address and computer as parameters. Test if the hosts file exists
Read the contents, add the new record and write back.
This ensures that the new record is actually on a new line all by itself