Execute shell commands in swift 2.0

execsh.swift

// Credit goes to http://stackoverflow.com/a/26400656/1651253
    func execcmd(cmdname: String) -> NSString
    {
        var outstr = ""
        let task = NSTask()
        task.launchPath = "/bin/sh"
        task.arguments = ["-c", cmdname]
        
        let pipe = NSPipe()
        task.standardOutput = pipe
        task.launch()
        
        let data = pipe.fileHandleForReading.readDataToEndOfFile()
        if let output = NSString(data: data, encoding: NSUTF8StringEncoding) {
            print(output)
            outstr = output as String
        }

        task.waitUntilExit()
        let status = task.terminationStatus
        
        print(status)
        
        return outstr
    }

task.launchPath = "/bin/sh" need change to task.launchPath = "/usr/bin/env"

depends what you are trying to do, if you are going to use pipe "|" inside your command, I use /bin/sh. I have not been able to successfully pipe commands using /usr/bin/env.