swift - 在 swift 中使用 NSTask 执行终端命令

Question

你好，我正在尝试用 swift 编写一个简单的程序来执行这个在 Dock 中添加空白的命令:

defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="spacer-tile";}'; killall 码头

这是我使用的代码:

    let task = NSTask()
    task.launchPath = "/usr/bin/defaults"
    task.arguments = ["write","com.apple.dock","persistent-apps","-array-add","'{\"tile-type\"=\"spacer-tile\";}';","killall Dock"]
    let pipe = NSPipe()
    task.standardOutput = pipe
    task.standardError = pipe
    task.launch()
    task.waitUntilExit()
    let data = pipe.fileHandleForReading.readDataToEndOfFile()
    let output: String = NSString(data: data, encoding: NSUTF8StringEncoding) as! String
    print(output)

我没有收到任何错误，但什么也没发生。有人可以帮帮我吗？

Answer 1

这是对我有用的代码:

    let task = NSTask()
    task.launchPath = "/usr/bin/defaults"
    task.arguments = ["write","com.apple.dock","persistent-apps","-array-add","{\"tile-type\"=\"spacer-tile\";}"]
    let pipe = NSPipe()
    task.standardOutput = pipe
    task.standardError = pipe
    task.launch()
    task.waitUntilExit()

    let task2 = NSTask()
    task2.launchPath = "/usr/bin/killall"
    task2.arguments = ["Dock"]
    let pipe2 = NSPipe()
    task2.standardOutput = pipe2
    task2.standardError = pipe2
    task2.launch()
    task2.waitUntilExit()


    let data = pipe.fileHandleForReading.readDataToEndOfFile()
    let output: String = NSString(data: data, encoding: NSUTF8StringEncoding) as! String
    print(output)