ios 实时输出日志信息 命令行

gistfile1.txt

1.  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 在函数里添加
redirectConsoleLog()


 /// redirect Log.
    func redirectConsoleLog() {
        #if DEBUG
            let documentDir: String = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
            print("documentPath : \(documentDir)")
            //重定向NSLog
            let logPath: NSString = documentDir.stringByAppendingString("/console.log")// NSURL(fileURLWithPath: documentDir).URLByAppendingPathComponent("console.log").absoluteString
            freopen(logPath.fileSystemRepresentation, "a+", stderr)
            
        #endif
    }
    
    
    2. 日志文件输出在/Users/asiainfo/Library/Developer/CoreSimulator/Devices/CA1056FB-C344-48B2-B271-F3065C4FE640/data/Containers/Data/Application/E4099B7B-CC76-49C5-BA83-B3D14698B233/Documents/console.log
    
    使用命令： tail -f console.log
    过滤 ： 使用命令： tail -f console.log | grep "ios"