My Microservice Apple System PreferencePane example

MyMicroservices.swift

import Cocoa
import PreferencePanes

class MyMicroservices: NSPreferencePane {
    
    @IBAction func myButton(_ sender: Any ) {
        FileManager.default.createFile( atPath: NSString( "/tmp/MyMicroservices.txt" ).expandingTildeInPath,
                                        contents: "\( Date() ) Amended".data( using: .utf8 ),
                                        attributes: nil )
        // echo "Amended" >> /tmp/MyMicroservices.txt
    }
    
    override func mainViewDidLoad() {
        super.mainViewDidLoad()
        FileManager.default.createFile( atPath: NSString( "/tmp/MyMicroservices.txt" ).expandingTildeInPath,
                                        contents: "\( Date() ) Created".data( using: .utf8 ),
                                        attributes: nil )
        // echo "Created" > /tmp/MyMicroservices.txt
    }

    override var shouldUnselect: NSPreferencePaneUnselectReply {
        DispatchQueue.main.asyncAfter( deadline: .now() + 4 ) {
            self.reply( toShouldUnselect: true )
        }
        return .unselectLater
    }
}