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<#
.SYNOPSIS
Remove one or more hosts entries from the Windows hosts file.
.PARAMETER Hosts
A list of hosts entries, delimited by '|'.
#>
[CmdletBinding()]
param(
[Parameter(Mandatory = $true, Position = 0)][String]$Hosts
)
$ProgressPreference = "SilentlyContinue"
$ErrorActionPreference = "Stop"
Write-Verbose -Message "Removing host file entries"
$hosts_entries = $Hosts.Split('|')
$hosts_file = "$env:SystemRoot\System32\drivers\etc\hosts"
$hosts_file_lines = [System.IO.File]::ReadAllLines($hosts_file)
$changed = $false
$new_lines = [System.Collections.ArrayList]@()
foreach ($host_line in $hosts_file_lines) {
if ($host_line -in $hosts_entries) {
$changed = $true
}
else {
$new_lines += $host_line
}
}
if ($changed) {
Write-Verbose -Message "Host file has extra entries, removing extra entries"
[System.IO.File]::WriteAllLines($hosts_file, $new_lines)
}
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