Calling an external command in Swift

Question

How can I call an external command (launch a subprocess) from a Swift script?

Perhaps something like call(["ls", "-l"]) in Python.

Answer 1

You can still use NSTask in Swift. Your example would be something like this.

let task = NSTask()
task.launchPath = "/bin/ls"
task.arguments = ["-l"]
task.launch()

Swift 3+, macOS 10.13+

let task = Process()
task.executableURL = URL(fileURLWithPath: "/bin/ls")
task.arguments = ["-l"]
task.run()