是否有用于跳入和跳出 CLI 的实用程序？

Question

假设我有一些服务器软件。我启动它，它在 stdin/stdout 上提供了一个接口，我可以用它在运行时输入命令。我希望能够通过 SSH 启动它，退出会话，返回并再次挂接到该 stdin/stdout 接口。

我在想一定有一个像 nohup 或 & 这样的简单命令可以让我这样做。在那儿？

Answer 1

是的，使用可以使用tmux或，较旧的screen. 以下是各自man页面的摘录：

1. tmux：

    tmux is a terminal multiplexer: it enables a number of terminals to be
    created, accessed, and controlled from a single screen.  tmux may be
    detached from a screen and continue running in the background, then later
    reattached.
   
    When tmux is started it creates a new session with a single window and
    displays it on screen.  A status line at the bottom of the screen shows
    information on the current session and is used to enter interactive
    commands.
   
    A session is a single collection of pseudo terminals under the management
    of tmux.  Each session has one or more windows linked to it.  A window
    occupies the entire screen and may be split into rectangular panes, each
    of which is a separate pseudo terminal (the pty(4) manual page documents
    the technical details of pseudo terminals).  Any number of tmux instances
    may connect to the same session, and any number of windows may be present
    in the same session.  Once all sessions are killed, tmux exits.
   
    Each session is persistent and will survive accidental disconnection
    (such as ssh(1) connection timeout) or intentional detaching (with the
    'C-b d' key strokes).  tmux may be reattached using:
   
          $ tmux attach
   

2. screen

      Screen  is  a  full-screen  window  manager that multiplexes a physical
      terminal between  several  processes  (typically  interactive  shells).
      Each  virtual  terminal  provides the functions of a DEC VT100 terminal
      and, in addition, several control functions from the ISO 6429 (ECMA 48,
      ANSI X3.64) and ISO 2022 standards (e.g. insert/delete line and support
      for multiple character sets).  There is a scrollback history buffer for
      each virtual terminal and a copy-and-paste mechanism that allows moving
      text regions between windows.
   
      When screen is called, it creates a single window with a  shell  in  it
      (or  the  specified  command) and then gets out of your way so that you
      can use the program as you normally would.  Then, at any time, you  can
      create new (full-screen) windows with other programs in them (including
      more shells), kill existing windows,  view  a  list  of  windows,  turn
      output  logging  on  and off, copy-and-paste text between windows, view
      the scrollback history, switch between windows in whatever  manner  you
      wish,  etc.  All  windows  run their programs completely independent of
      each other. Programs continue to run when their window is currently not
      visible  and  even  when  the whole screen session is detached from the
      user's terminal.  When a program terminates, screen (per default) kills
      the  window  that  contained it.  If this window was in the foreground,
      the display switches to the previous window; if none are  left,  screen
      exits.
   

这两个程序都可以让您登录到服务器，启动进程，然后注销并保持运行。当您想检查它时，您重新登录到服务器并重新连接到正在运行的tmux或screen会话，就好像您从未离开过一样。您可以从 Ubuntu 存储库安装它们：

sudo apt-get install screen

或者

sudo apt-get install tmux

您可以在我们的姊妹网站Unix & Linux上找到比较这两个程序的不错的问答。