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In computing, Mosh (mobile shell) is a tool used to connect from a client computer to a server over the Internet, to run a remote terminal.〔("Mosh: the mobile shell" ). Retrieved on 28 March 2013.〕 Mosh is similar〔Brockmeier, Joe. ("Into the Mosh Pit: A Mobile Shell Replacement for SSH" ), ''linux.com'', 10 April 2012. Retrieved on 28 March 2013.〕 to SSH, with additional features meant to improve usability for mobile users. The major features are: * Mosh keeps its connection when a user "roams" to different IP addresses, for example by moving to a different Wi-Fi network or when changing from Wi-Fi to 3G.〔Delony, David. ("Mosh: Secure Shell Without the Pain" ), ''Technopedia'', 19 October 2012. Retrieved on 28 March 2013.〕 * Mosh keeps the connection open (not in the TCP-sense though, Mosh uses UDP) when a user loses their Internet connection or puts their client to "sleep." SSH can lose its connection in such cases because TCP times out.〔Cox, John. ("MIT researchers chart a new approach for mobile Internet protocols" ), ''Network World'', 6 July 2012. Retrieved on 28 March 2013.〕 * Mosh tries to show a user the keys they have typed, and deletions they have made to text, immediately, without waiting for network lag. It uses an adaptive system that predicts whether the application running on the server will decide to echo the user's keystrokes or deletions.〔Beckert, Axel. ("Mosh and AutoSSH: Remote shell tools that make your life easier on a slow or constantly morphing network" ), ''Linux Magazine'', November 2012.〕〔Leyden, John. ("MIT's mind-reading Mosh pits itself against SSH daemons" ), ''The Register'', 13 April 2012. Retrieved on 28 March 2013.〕 The main drawbacks of mosh are additional prerequisites to the server and that some special features of SSH are not available anymore. ==Design== Mosh works at a different layer from SSH. Whereas SSH transmits a stream of bytes in each direction (from server to client or client to server) using TCP, Mosh runs a terminal emulator at the server to figure out what should be on the screen.〔 The server then transmits this screen to the client at a varying frame rate, depending on the speed of the network.〔Winstein, Keith. ("Mosh: An Interactive Remote Shell for Mobile Clients" ), USENIX Annual Technical Conference 2012, Boston, Mass., 14 June 2012.〕 This allows Mosh to save on network traffic on slow or intermittent connections. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mosh (software)」の詳細全文を読む スポンサード リンク
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