HowTo Share A Terminal Session Using Screen - Revision history

Paul Blankenbaker: Added some more keyboard shortcuts (when using emacs)

2011-09-06T12:13:26Z

Added some more keyboard shortcuts (when using emacs)

← Older revision		Revision as of 08:13, 6 September 2011
Line 17:		Line 17:
	!align="left" valign="top"\|Ctrl-a d		!align="left" valign="top"\|Ctrl-a d
	\|Detaches from a screen session.		\|Detaches from a screen session.

			\|-
			!align="left" valign="top"\|Ctrl-a f
			\|Toggle flow control mode (enable/disable Ctrl-Q and Ctrl-S pass through).

	\|-		\|-
	!align="left" valign="top"\|Ctrl-a k		!align="left" valign="top"\|Ctrl-a k
	\|Detaches from and kills (terminates) the screen session.		\|Detaches from and kills (terminates) the screen session.

			\|-
			!align="left" valign="top"\|Ctrl-a q
			\|Passes a ''Ctrl-q'' through to the terminal session running within screen (or use ''Ctrl-a f'' to toggle whether '''screen''' captures flow control characters).

			\|-
			!align="left" valign="top"\|Ctrl-a s
			\|Passes a ''Ctrl-s'' through to the terminal session running within screen (or use ''Ctrl-a f'' to toggle whether '''screen''' captures flow control characters).

	\|-		\|-

Paul Blankenbaker: /* Attaching To A Existing Screen */

2011-09-05T14:44:59Z

Attaching To A Existing Screen

← Older revision		Revision as of 10:44, 5 September 2011
Line 74:		Line 74:

	[pkb@rice ~]$ screen -x 10519.shared		[pkb@rice ~]$ screen -x 10519.shared




	= Killing A Screen Session =		= Killing A Screen Session =

Paul Blankenbaker: /* Screen Command Sequences */

2011-09-05T14:44:33Z

Screen Command Sequences

← Older revision		Revision as of 10:44, 5 September 2011
Line 13:		Line 13:
	!align="left" valign="top"\|Ctrl-a a		!align="left" valign="top"\|Ctrl-a a
	\|Passes a ''Ctrl-a'' through to the terminal session running within screen.		\|Passes a ''Ctrl-a'' through to the terminal session running within screen.

	\|-
	~~!align="left" valign="top"\|Ctrl-a :kill~~
	~~\|Passes a ''Ctrl-a'' through to the terminal sess~~

	\|-		\|-
Line 25:		Line 21:
	!align="left" valign="top"\|Ctrl-a k		!align="left" valign="top"\|Ctrl-a k
	\|Detaches from and kills (terminates) the screen session.		\|Detaches from and kills (terminates) the screen session.

			\|-
			!align="left" valign="top"\|Ctrl-a :kill
			\|Also detaches from and kills (terminates) the screen session.

	\|-		\|-

Rwh: /* Screen Command Sequences */

2011-09-05T14:43:39Z

Screen Command Sequences

← Older revision		Revision as of 10:43, 5 September 2011
Line 13:		Line 13:
	!align="left" valign="top"\|Ctrl-a a		!align="left" valign="top"\|Ctrl-a a
	\|Passes a ''Ctrl-a'' through to the terminal session running within screen.		\|Passes a ''Ctrl-a'' through to the terminal session running within screen.

			\|-
			!align="left" valign="top"\|Ctrl-a :kill
			\|Passes a ''Ctrl-a'' through to the terminal sess

	\|-		\|-
Line 23:		Line 27:

	\|-		\|-
	!align="left" valign="top"\|Ctrl-a :multiuser		!align="left" valign="top"\|Ctrl-a :multiuser on
	\|Make the screen session a multi-user session (so other users can attach).		\|Make the screen session a multi-user session (so other users can attach).

Rwh: /* Sharing A Screen Session With One Account */

2011-09-05T14:38:49Z

Sharing A Screen Session With One Account

← Older revision		Revision as of 10:38, 5 September 2011
Line 90:		Line 90:
	[devel@rice ~]$ screen -x dbgwindow		[devel@rice ~]$ screen -x dbgwindow

	* Have the other person (logged into the same account) also ~~attache~~ to the screen session		* Have the other person (logged into the same account) also attach to the screen session

	[devel@rice ~]$ screen -x dbgwindow		[devel@rice ~]$ screen -x dbgwindow

Paul Blankenbaker: Fixed multiuser command

2011-09-05T14:38:34Z

Fixed multiuser command

← Older revision		Revision as of 10:38, 5 September 2011
Line 106:		Line 106:
	* Enable multi-user mode		* Enable multi-user mode

	[user1@rice tmp]$ <span style="color:green;">Ctrl-a :multiuser</span>		[user1@rice tmp]$ <span style="color:green;">Ctrl-a :multiuser on</span>

	* Add the desired user(s)		* Add the desired user(s)

Paul Blankenbaker at 19:33, 4 September 2011

2011-09-04T19:33:43Z

@@ Line 1: / Line 1: @@
-The '''screen''' command can be particularly useful in the following circumstances:
+The '''screen''' command can is essentially a terminal based version of VNC and is particularly useful in the following circumstances:
 * When you want to leave a terminal session running even after logging out of the system.
 * When you want to share a terminal session with another user (sort of like VNC but for the terminal).
 = Setting Up A Shared Screen =
@@ Line 26: / Line 54: @@
 The following allows you to attach to a existing screen session named ''shared'':
-  [pkb@rice ~]$ screen -r shared
+  [user@rice ~]$ screen -x shared
 Once attached, all of your commands will be done within the screen named ''shared''. To detach yourself from the screen, use the ''Ctrl-a d'' command sequence.
 = Killing A Screen Session =
@@ Line 92: / Line 136: @@
 I'm guessing that making the screen command suid root is a security issue (otherwise, wouldn't it already have been set this way). So, you may be better off making a third ''shared account'' which both users can log into to share a screen session with.

Paul Blankenbaker: /* Sharing A Screen Session With Another User */

2011-09-04T19:27:02Z

Sharing A Screen Session With Another User

@@ Line 33: / Line 33: @@
 To cleanly shutdown a screen session, you can attach to it and then press the ''Ctrl-a k'' command sequence.
 = Sharing A Screen Session With Another User =
@@ Line 38: / Line 56: @@
 To share a screen session with another user (for teaching or when there isn't enough bandwidth for VNC), you need to:
-* Attach to the screen session
+* Attach to the screen session which you want to share
 * Enable multi-user mode
 * Add the desired user(s)
-  [pkb@rice ~]$ screen -r shared
+  [user1@rice tmp]$ <span style="color:green;">Ctrl-a :acladd user2</span>
- [pkb@rice tmp]$ <span style="color:green;">Ctrl-a :multiuser</span> <span style="color:green;">Ctrl-a :acladd megan</span>
-The other user should then be able to connect to the shared screen using the following command:
+If you want to enable this multi-user screen sharing feature and you see that error, you will need to kill all of the running screen sessions and then run the following commands:
 = Screen Command Sequences =

Paul Blankenbaker: /* Attaching To A Existing Screen */

2011-09-04T17:39:09Z

Attaching To A Existing Screen

← Older revision		Revision as of 13:39, 4 September 2011
Line 29:		Line 29:

	Once attached, all of your commands will be done within the screen named ''shared''. To detach yourself from the screen, use the ''Ctrl-a d'' command sequence.		Once attached, all of your commands will be done within the screen named ''shared''. To detach yourself from the screen, use the ''Ctrl-a d'' command sequence.

			= Killing A Screen Session =

			To cleanly shutdown a screen session, you can attach to it and then press the ''Ctrl-a k'' command sequence.

			= Sharing A Screen Session With Another User =

			To share a screen session with another user (for teaching or when there isn't enough bandwidth for VNC), you need to:

			* Attach to the screen session
			* Enable multi-user mode
			* Add the desired user(s)

			[pkb@rice ~]$ screen -r shared
			[pkb@rice tmp]$ <span style="color:green;">Ctrl-a :multiuser</span> <span style="color:green;">Ctrl-a :acladd megan</span>

			The other user should then be able to connect to the shared screen using the following command:



			= Screen Command Sequences =

			There are many screen commands which you can run. To enter a screen command you use the escape sequence following by the command. For a full list of all of the available commands, run ''man screen''. The following table shows some of the commands which we find most useful:

			{\| border="0"

			\|-
			!align="left" valign="top"\|Ctrl-a a
			\|Passes a ''Ctrl-a'' through to the terminal session running within screen.

			\|-
			!align="left" valign="top"\|Ctrl-a d
			\|Detaches from a screen session.

			\|-
			!align="left" valign="top"\|Ctrl-a k
			\|Detaches from and kills (terminates) the screen session.

			\|-
			!align="left" valign="top"\|Ctrl-a :multiuser
			\|Make the screen session a multi-user session (so other users can attach).

			\|-
			!align="left" valign="top"\|Ctrl-a :acladd USER
			\|Allow the user specified (''USER'') to connect to a multi-user screen session.

			\|}

Paul Blankenbaker: Created page with 'The '''screen''' command can be particularly useful in the following circumstances: * When you want to leave a terminal session running even after logging out of the system. * W…'

2011-09-04T16:57:11Z

Created page with 'The '''screen''' command can be particularly useful in the following circumstances: * When you want to leave a terminal session running even after logging out of the system. * W…'

New page

The '''screen''' command can be particularly useful in the following circumstances:

* When you want to leave a terminal session running even after logging out of the system.
* When you want to share a terminal session with another user (sort of like VNC but for the terminal).

= Setting Up A Shared Screen =

The following command sequence sets up a shared screen session named ''shared'':

[pkb@rice ~]$ screen -d -m -S shared
[pkb@rice ~]$

= Listing Your Screen Sessions =

The following shows what screen sessions you currently have running:

[pkb@rice ~]$ screen -ls
There is a screen on:
8632.shared (Detached)
1 Socket in /var/run/screen/S-pkb.

[pkb@rice ~]$

= Attaching To A Existing Screen =

The following allows you to attach to a existing screen session named ''shared'':

[pkb@rice ~]$ screen -r shared

Once attached, all of your commands will be done within the screen named ''shared''. To detach yourself from the screen, use the ''Ctrl-a d'' command sequence.