initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2022 NXU
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Switch Ethernet (PowerShell)
+
+A simple script to change the priority of two Network Interfaces (NICs). 
+
+Useful for switching between two networks or change the priority of Ethernet and Wi-Fi.
+
+
+## :sparkles: Requirements
+- Text Editor
+- PowerShell
+- Only support **Windows**
+- Admin Permission
+- Basic technical knowledge
+
+
+## :notebook: How To Use?
+1. Open the ps1 file with text editor
+2. Open setting / control panel to view the name of both NIC
+3. Change the `$net1_name` & `$net2_name` to your NIC's name, change the `$check_ip_url` if you want
+4. Create a shortcut to the script `powershell -f <PATH_OF_THE_SCRIPT>` (For example, *`powershell -f "C:\Users\jasonfoknxu\Documents\switch-ethernet.ps1"`*)
+5. Right-click the shortcut :arrow_right: Properties :arrow_right: Shortcut (tab) :arrow_right: Advanced :arrow_right: Select **`Run as Administrator`**
+6. Execute the script by clicking the shortcut
+7. Input `1` to select first network, `2` for the second network, `0` for returning back to default (auto)
+8. Done
+
+
+## :star: Example
+![Two NIC](_img/nic.png)
+
+There are two networks, the name are `LAN` and `Wi-Fi`
+
+You can select your favorite IP checking server or empty (`$check_ip_url = ""`) to disable IP checking
+
+The config would be like the following:
+```powershell
+$net1_name = "LAN"
+$net2_name = "Wi-Fi" 
+$check_ip_url = "https://api.ipify.org"
+```
+
+
+## :gear: How it works?
+The script will change the Interface Metric of target NIC to lower, another NIC to higher Metric

switch-ethernet.ps1

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+# switch-ethernet (PowerShell)
+# - Developer: NXU (GitHub: @jasonfoknxu)
+# - https://github.com/jasonfoknxu/
+# - Switch network with changing the Metric (Lower = Higher Priority)
+
+### ---------- ###
+
+$net1_name = "Ethernet" # Input the name of first network interface
+$net2_name = "Ethernet 2" # Input the name of second network interface
+$check_ip_url = "http://ipinfo.io/ip" # URL to check the current IP address (empty to disable checking)
+
+### ---------- ###
+
+$option = Read-Host "Networks:`n0 - Auto`n1 - $net1_name`n2 - $net2_name`nSwitch to"
+
+if ($option -eq 1) {
+    Write-Host "Switching to $net1_name"
+    Get-NetAdapter -Name $net1_name | Set-NetIPInterface -InterfaceMetric "5"
+    Get-NetAdapter -Name $net2_name | Set-NetIPInterface  -InterfaceMetric "10"
+}
+elseif ($option -eq 2) {
+    Write-Host "Switching to $net2_name"
+    Get-NetAdapter -Name $net1_name | Set-NetIPInterface -InterfaceMetric "10"
+    Get-NetAdapter -Name $net2_name | Set-NetIPInterface  -InterfaceMetric "5"
+}
+else {
+    Write-Host "Switching to Auto LAN"
+    Get-NetAdapter -Name $net1_name | Set-NetIPInterface -AutomaticMetric enabled
+    Get-NetAdapter -Name $net2_name | Set-NetIPInterface -AutomaticMetric enabled
+}
+if ($check_ip_url -ne "") {
+    $currentIP = (Invoke-WebRequest -UseBasicParsing -Uri $check_ip_url).Content.Trim()
+    Write-Host "Current IP: $currentIP"
+}
+
+CMD /c PAUSE