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translating---geekpi
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Basic screen command usage and examples
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============================================================
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Screen is a very useful command that offers the ability to use multiple shell windows (sessions) from a single SSH session. When the session is detached or there is a network disruption, the process that is started in a screen session will still run and you can re-attach to the screen session at any time. This also comes in handy if you want to run a long process persistently or connect to shell sessions from multiple locations.
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In this article, we will show the basics of installing and using screen on a Linux VPS.
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### How to install screen
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Screen comes preinstalled on some of the popular distributions. You can check if it is installed on your server using the following command
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```
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screen -v
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Screen version 4.00.03 (FAU)
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```
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If you do not have screen to the VPS, you can easily install it using the package manager provided by the OS.
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### [CentOS][4]/RedHat/Fedora
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```
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yum -y install screen
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```
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### [Ubuntu][5]/[Debian][6]
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```
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apt-get -y install screen
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```
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### How to start a screen session
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You can start screen by typing ‘screen’ at the command prompt and a new screen session will be started which looks the same as the command prompt
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```
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screen
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```
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It is a good practice to start screen sessions with descriptive names so you can easily remember which process is running in the session. To create a new session with a session name run the following command
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```
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screen -S name
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```
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and replace ‘name’ with a meaningful name for your session.
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### Detach from screen session
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To detach from the current screen session you can press ‘Ctrl-A‘ and ‘d‘ on your keyboard. All screen sessions will still be active and you can re-attach to them at any time later.
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### Reattach to screen session
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If you have detached from a session or your connection is interrupted for some reason, you can easily re-attach by executing the following command:
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```
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screen -r
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```
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If you have multiple screen sessions you can list them with ‘ls’
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```
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screen -ls
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There are screens on:
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7880.session (Detached)
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7934.session2 (Detached)
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7907.session1 (Detached)
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3 Sockets in /var/run/screen/S-root.
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```
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In our example, we have three active screen sessions. So, if you want to restore the session ‘session2’ you can execute
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```
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screen -r 7934
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```
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or you can use the screen name
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```
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screen -r -S session2
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```
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### Terminate screen session
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There are several ways to terminate the screen session. You can do it by pressing ‘Ctrl‘ + ‘d‘ on your keyboard or use the ‘exit’ command line command.
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To see all useful features of the screen command you can check screen’s man page.
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```
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man screen
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NAME
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screen - screen manager with VT100/ANSI terminal emulation
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SYNOPSIS
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screen [ -options ] [ cmd [ args ] ]
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screen -r [[pid.]tty[.host]]
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screen -r sessionowner/[[pid.]tty[.host]]
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```
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* * *
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Of course, you don’t have to do any of this if you use one of our [Linux VPS hosting][9] services, in which case you can simply ask our expert Linux admins to do this for you. They are available 24×7 and will take care of your request immediately.
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PS. If you liked this post please share it with your friends on the social networks using the buttons below or simply leave a comment in the comment section. Thanks.
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--------------------------------------------------------------------------------
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via: https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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作者：[rosehosting.com][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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[1]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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[2]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/#comments
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[3]:https://www.rosehosting.com/blog/category/tips-and-tricks/
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[4]:https://www.rosehosting.com/centos-vps.html
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[5]:https://www.rosehosting.com/ubuntu-vps.html
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[6]:https://www.rosehosting.com/debian-vps.html
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[7]:https://plus.google.com/share?url=https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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[8]:http://www.linkedin.com/shareArticle?mini=true&url=https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/&title=Basic%20screen%20command%20usage%20and%20examples&summary=Screen%20is%20a%20very%20useful%20command%20that%20offers%20the%20ability%20to%20use%20multiple%20shell%20windows%20(sessions)%20from%20a%20single%20SSH%20session.%20When%20the%20session%20is%20detached%20or%20there%20is%20a%20network%20disruption,%20the%20process%20that%20is%20started%20in%20a%20screen%20session%20will%20still%20run%20and%20you%20can%20re-attach%20to%20the%20...
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[9]:https://www.rosehosting.com/linux-vps-hosting.html
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@ -0,0 +1,129 @@
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screen 命令使用及示例
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============================================================
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screen 是一个非常有用的命令，提供从单个 SSH 会话中使用多个 shell 窗口（会话）的能力。当会话分离或网络中断时，screen 会话中启动的进程仍将运行，你可以随时重新连接到 screen 会话。如果你想运行一个持久的进程或者连接到多个位置的 shell 会话，这也很方便。
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在本文中，我们将展示在 Linux VPS 上安装和使用 screen 的基本知识。
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### 如何安装 screen
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screen 在一些流行的发行版上已经预安装了。你可以使用下面的命令检查是否已经在你的服务器上安装了。
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```
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screen -v
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Screen version 4.00.03 (FAU)
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```
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如果在 VPS 中还没有 screen，你可以使用系统提供的包管理器很简单地安装它。
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### [CentOS][4]/RedHat/Fedora
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```
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yum -y install screen
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```
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### [Ubuntu][5]/[Debian][6]
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```
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apt-get -y install screen
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```
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### 如何启动一个 screen 会话
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你可以在命令行中输入 “screen” 来启动screen，接着会有一个看上去和命令行一样的 screen 会话启动。
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```
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screen
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```
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使用描述性名称启动屏幕会话是一个很好的做法，这样你可以轻松地记住会话中正在运行的进程。要使用会话名称创建新会话，请运行以下命令：
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```
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screen -S name
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```
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将 “name” 替换为对你会话有意义的名字。
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### 从 screen 会话分离
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要从当前的 screen 会话中分离，你可以按下 “Ctrl-A” 和 “d”。所有的 screen 会话仍是活跃的，你之后可以随时重新连接。
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### 重新连接到 screen 会话
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如果你从一个会话分离，或者由于某些原因你的连接被中断了，你可以使用下面的命令重新连接：
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```
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screen -r
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```
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如果你有多个 screen 会话，你可以用 “ls” 列出它们。
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```
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screen -ls
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There are screens on:
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7880.session (Detached)
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7934.session2 (Detached)
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7907.session1 (Detached)
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3 Sockets in /var/run/screen/S-root.
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```
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在我们的例子中，我们有三个活跃的 screen 会话。因此，如果你想要还原 “session2” 会话，你可以执行：
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```
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screen -r 7934
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```
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或者使用 screen 名称
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```
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screen -r -S session2
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```
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### 中止 screen 会话
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有几种方法来中止 screen 会话。你可以按下 “Ctrl+d”, 或者在命令行中使用 “exit” 命令。
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要查看 screen 命令所有有用的功能，你可以查看 screen 的 man 手册。
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```
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man screen
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NAME
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screen - screen manager with VT100/ANSI terminal emulation
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SYNOPSIS
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screen [ -options ] [ cmd [ args ] ]
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screen -r [[pid.]tty[.host]]
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screen -r sessionowner/[[pid.]tty[.host]]
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```
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* * *
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当然，如果你使用我们的[ Linux VPS 托管][9]服务，你不必这样做，在这种情况下，你可以要求我们的专家 Linux 管理员为你做这个。他们提供 24×7 的服务，并会立即响应你的要求。
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顺便说一下，如果你喜欢这篇文章，请使用下面的按钮在社交网络上与你的朋友分享，或者在评论区留下评论。谢谢。
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--------------------------------------------------------------------------------
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via: https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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作者：[rosehosting.com][a]
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译者：[geekpi](https://github.com/geekpi)
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校对：[校对者ID](https://github.com/校对者ID)
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||||
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||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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[1]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
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[2]:https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/#comments
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[3]:https://www.rosehosting.com/blog/category/tips-and-tricks/
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[4]:https://www.rosehosting.com/centos-vps.html
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[5]:https://www.rosehosting.com/ubuntu-vps.html
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[6]:https://www.rosehosting.com/debian-vps.html
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[7]:https://plus.google.com/share?url=https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/
|
||||
[8]:http://www.linkedin.com/shareArticle?mini=true&url=https://www.rosehosting.com/blog/basic-screen-command-usage-and-examples/&title=Basic%20screen%20command%20usage%20and%20examples&summary=Screen%20is%20a%20very%20useful%20command%20that%20offers%20the%20ability%20to%20use%20multiple%20shell%20windows%20(sessions)%20from%20a%20single%20SSH%20session.%20When%20the%20session%20is%20detached%20or%20there%20is%20a%20network%20disruption,%20the%20process%20that%20is%20started%20in%20a%20screen%20session%20will%20still%20run%20and%20you%20can%20re-attach%20to%20the%20...
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[9]:https://www.rosehosting.com/linux-vps-hosting.html
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