Thinking more...

最近幫朋友寫腳本，需要變更網路，這首選當然是用 PowerShell ，再來是 netsh 指令。

所以就查了這部份，以下這些腳本都需要管理者權限。

從固定IP改為DHCP

Set-NetIPInterface -InterfaceAlias 'Ethernet 2' -Dhcp Enabled
Get-NetIPAddress -InterfaceAlias 'Ethernet 2' | Remove-NetRoute

從 DHCP 改為固定IP

Get-NetIpAddress -InterfaceAlias 'Ethernet 2' | New-NetIpAddress  IpAddress 192.168.1.10 -PrefixLength 24 -DefaultGateway 192.168.1.1

變更固定IP

Get-NetIPAddress -InterfaceAlias 'Ethernet 2' | Remove-NetRoute
Get-NetIPAddress -InterfaceAlias 'Ethernet 2' | Remove-NetIpAddress
Get-NetIpAddress -InterfaceAlias 'Ethernet 2' | New-NetIpAddress ‑IpAddress 192.168.1.11 -PrefixLength 24 -DefaultGateway 192.168.1.1

重設DNS

Set-DnsClientServerAddress -InterfaceAlias "Ethernet" -ResetServerAddresses
Set-DnsClientServerAddress -InterfaceAlias "Wi-fi" -ResetServerAddresses

設定DNS

Set-DnsClientServerAddress -InterfaceAlias "Ethernet" -ServerAddresses ("8.8.8.8","8.8.4.4")
Set-DnsClientServerAddress -InterfaceAlias "Wi-fi" -ServerAddresses ("8.8.8.8","8.8.4.4")

參考資料

• Set an IP address and configure DHCP with PowerShell
• Set and Reset DNS Settings with PowerShell
• PowerShell 指令設定 IP/Gateway/DNS、更改電腦名稱-黑暗執行緒