How to Install and Use screen - Revision history

Docs admin: Docs admin moved page How to Install/Use screen to How to Install and Use screen without leaving a redirect

2012-10-09T15:42:34Z

Docs admin moved page How to Install/Use screen to How to Install and Use screen without leaving a redirect

← Older revision	Revision as of 11:42, 9 October 2012
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Docs admin at 15:42, 9 October 2012

2012-10-09T15:42:14Z

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-<html> <em>If your server is running a Linux based operating system other than CentOS/RedHat, the installation process of screen may be a little different.  All other information provided should be the same for using on Linux based operating systems.</em><br /><br />Ever have a SSH connection drop out on you when you are doing something important?  You lose any information you may have had because the connection dropped, and now you have to start all over.  Wouldn't it be nice if you could prevent this?  Well, you can by using screen.<br /><br />screen is a handy tool that allows you to use multiple virtual terminals in Linux in which you can process separate tasks in each virtual terminal. This tool is highly praised by Linux Technicians, Linux Engineers, and any Linux webmaster.  Acenet's System Administrators use screen pretty much every day.<br /><br /><strong>***Installing screen***</strong><br /><br />screen should already be installed on your server. You can verify that it is installed on your CentOS/RedHat server by running this command:
+If your server is running a Linux based operating system other than CentOS/RedHat, the installation process of screen may be a little different.  All other information provided should be the same for using on Linux based operating systems.
-<div class="code_style">which screen</div>
-<br />If screen is installed, you will receive this path output:<br /><br />
+Ever have a SSH connection drop out on you when you are doing something important?  You lose any information you may have had because the connection dropped, and now you have to start all over.  Wouldn't it be nice if you could prevent this?  Well, you can by using screen.
-<div class="code_style">/usr/bin/screen</div>
-<br />If screen is not installed, run this command to install it:<br /><br />
+screen is a handy tool that allows you to use multiple virtual terminals in Linux.  You can process separate tasks in each virtual terminal. This tool is highly praised by Linux Technicians, Linux Engineers, and any Linux webmaster.  Acenet's System Administrators use screen pretty much every day.
-<div class="code_style">yum install screen</div>
-<br /><br /><strong>***Using screen***</strong><br /><br />To enter screen, simply run this command:<br /><br />
+==Installing screen==
-<div class="code_style">screen</div>
-<br />This will take you to a screen virtual terminal, you can verify you are in screen by looking at the top left corner of your SSH window for [screen 0: bash].<br /><br />To kill and exit a screen virtual terminal, run this command from within the screen virtual terminal you're wanting to kill and exit:<br /><br />
+screen should already be installed on your server. You can verify that it is installed on your CentOS/RedHat server by running this command:
-<div class="code_style">exit</div>
-<br />Other than the commands "screen" and "exit", you must signal to screen you are issuing a command by pressing Ctrl-A on your keyboard followed by a letter.  For example, here is how to detach from screen:<br /><br />Ctrl-A D<br /><br />I am telling screen I am issuing a command by pressing Ctrl-A. I am then telling screen to detach by pressing D. <br /><br />Detaching from screen is useful because doing so does not kill the virtual terminal. So, any commands you executed within the screen virtual terminal will continue to run until they have completed or the screen virtual terminal is killed.<br /><br />After you have detached from screen, you can re-attach to a screen virtual terminal by running the command:<br /><br />
+<syntaxhighlight lang="bash">which screen</syntaxhighlight>
-<div class="code_style">screen -r</div>
-<br />Now let's say you have multiple screen virtual terminals running and you want to re-attach to a specific one.  In order to do this, you need to know the session ID of the screen virtual terminal you're wanting to re-attach to.  To find out the session ID, run the following command:<br /><br />
+If screen is installed, you will receive this path output:
-<div class="code_style">screen -ls</div>
-<br />This will show all of the running screen virtual terminals and their session IDs.  Here is an example:<br /><br />
+<syntaxhighlight lang="bash">/usr/bin/screen</syntaxhighlight>
-<div class="code_style">root@server [~]# screen -ls<br />There are screens on:<br />        <span style="color: #ff0000;">547391</span>.pts-1.server       (Detached)<br />        <span style="color: #ff0000;">549766</span>.pts-1.server       (Detached)<br />2 Sockets in /var/run/screen/S-root.</div>
-<br />There are 2 screen virtual terminals in the above example. The numbers in red are the screen session IDs for the respective virtual terminals.<br /><br />Now that you have the screen session ID, run this command to re-attach to the screen virtual terminal:<br /><br />
+If screen is not installed, run this command to install it:
-<div class="code_style">screen -r <span style="color: #ff0000;">FULLSESSIONID</span></div>
-<br /><em>replacing</em> <span style="color: #ff0000;">FULLSESSIONID</span> <em>with the screen virtual terminal's actual session ID</em><br /><br />To view screen's manual, run this command:<br /><br />
+<syntaxhighlight lang="bash">yum install screen</syntaxhighlight>
-<div class="code_style">man screen</div></html> [[Category:Technical Support FAQ]]

Docs admin: test

2012-09-28T19:35:05Z

test

New page

<html> <em>If your server is running a Linux based operating system other than CentOS/RedHat, the installation process of screen may be a little different. All other information provided should be the same for using on Linux based operating systems.</em><br /><br />Ever have a SSH connection drop out on you when you are doing something important? You lose any information you may have had because the connection dropped, and now you have to start all over. Wouldn't it be nice if you could prevent this? Well, you can by using screen.<br /><br />screen is a handy tool that allows you to use multiple virtual terminals in Linux in which you can process separate tasks in each virtual terminal. This tool is highly praised by Linux Technicians, Linux Engineers, and any Linux webmaster. Acenet's System Administrators use screen pretty much every day.<br /><br /><strong>***Installing screen***</strong><br /><br />screen should already be installed on your server. You can verify that it is installed on your CentOS/RedHat server by running this command:
<div class="code_style">which screen</div>
<br />If screen is installed, you will receive this path output:<br /><br />
<div class="code_style">/usr/bin/screen</div>
<br />If screen is not installed, run this command to install it:<br /><br />
<div class="code_style">yum install screen</div>
<br /><br /><strong>***Using screen***</strong><br /><br />To enter screen, simply run this command:<br /><br />
<div class="code_style">screen</div>
<br />This will take you to a screen virtual terminal, you can verify you are in screen by looking at the top left corner of your SSH window for [screen 0: bash].<br /><br />To kill and exit a screen virtual terminal, run this command from within the screen virtual terminal you're wanting to kill and exit:<br /><br />
<div class="code_style">exit</div>
<br />Other than the commands "screen" and "exit", you must signal to screen you are issuing a command by pressing Ctrl-A on your keyboard followed by a letter. For example, here is how to detach from screen:<br /><br />Ctrl-A D<br /><br />I am telling screen I am issuing a command by pressing Ctrl-A. I am then telling screen to detach by pressing D. <br /><br />Detaching from screen is useful because doing so does not kill the virtual terminal. So, any commands you executed within the screen virtual terminal will continue to run until they have completed or the screen virtual terminal is killed.<br /><br />After you have detached from screen, you can re-attach to a screen virtual terminal by running the command:<br /><br />
<div class="code_style">screen -r</div>
<br />Now let's say you have multiple screen virtual terminals running and you want to re-attach to a specific one. In order to do this, you need to know the session ID of the screen virtual terminal you're wanting to re-attach to. To find out the session ID, run the following command:<br /><br />
<div class="code_style">screen -ls</div>
<br />This will show all of the running screen virtual terminals and their session IDs. Here is an example:<br /><br />
<div class="code_style">root@server [~]# screen -ls<br />There are screens on:<br /> <span style="color: #ff0000;">547391</span>.pts-1.server (Detached)<br /> <span style="color: #ff0000;">549766</span>.pts-1.server (Detached)<br />2 Sockets in /var/run/screen/S-root.</div>
<br />There are 2 screen virtual terminals in the above example. The numbers in red are the screen session IDs for the respective virtual terminals.<br /><br />Now that you have the screen session ID, run this command to re-attach to the screen virtual terminal:<br /><br />
<div class="code_style">screen -r <span style="color: #ff0000;">FULLSESSIONID</span></div>
<br /><em>replacing</em> <span style="color: #ff0000;">FULLSESSIONID</span> <em>with the screen virtual terminal's actual session ID</em><br /><br />To view screen's manual, run this command:<br /><br />
<div class="code_style">man screen</div></html> [[Category:Technical Support FAQ]]