RE: [gentoo-user] viewing consoles remotely
-Original Message- From: Ryan Tandy [mailto:[EMAIL PROTECTED] Sent: Thursday, June 01, 2006 9:58 PM For your situation, assuming I've interpreted it correctly, you should get the user to SSH into your box, set their shell in /etc/passwd to /usr/bin/screen -S (something memorable) /bin/bash, and yourself run sudo screen -x (something memorable) to view it. I tried this suggestion, but it didn't work. I couldn't login. :( I would LOVE to make screen (and BASH) my default shell. I'm always ssh'ing into my servers and getting upset if the connection goes down between me and them, or I start an emerge and then forgot that I can't actually shut down my host computer as that will kill the ssh and therefore the emerge. I want screen to start up automatically as my default shell (as bash, with all my .bashrc settings, etc) whenever I connect either via console or ssh. I also would like to automatically re-attach to that screen whenever I login again. Is this possible? And if so, what do I need to put in /etc/password or wherever. I could put it in a .bash* file, but that seems hackish (given the idea in Ryan's quote above). DÆVID -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] viewing consoles remotely
On Sat, 2006-06-03 at 18:24 -0700, Ryan Tandy wrote: Iain Buchanan wrote: 1. sudo chmod u+s /usr/bin/screen 2. sudo chmod 755 /var/run/screen 3. screen -r sessionowner/[[pid.]tty[.host]] I think the little part of me that's even slightly security-conscious just had a heart attack. Yeah, this means anyone with login access can view any screen on the host. However, I intend to get around this in a number of ways: 1. There are no real-life users on this machine - it just performs tasks (not a good enough security by itself, I know). 2. Screens will be created with `screen -d -m blah` so when the blah process dies, the screen will terminate, meaning someone watching won't be left with root access. 3. Machines are remote, requiring dial up password, then ssh password, without general world wide access. 4. Any more suggestions this list offers :) It's interesting that screen -r has the desired effect, though; I could have sworn screen -x was the only method that did the simultaneous-use thing. Hmm, that's what the man page says about -x, but it says similar about -r - note it only worked when I specified sessionowner/ thanks, -- Iain Buchanan iaindb at netspace dot net dot au Women complain about sex more than men. Their gripes fall into two categories: (1) Not enough and (2) Too much. -- Ann Landers -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] viewing consoles remotely
On Friday 02 June 2006 06:57, Ryan Tandy wrote: Multi-user mode. Only works as root, regardless of who started the screen. AFAIK suid root is enough. Using it depends on your approach to security though :) . pgpscL0Ui4GUP.pgp Description: PGP signature
Re: [gentoo-user] viewing consoles remotely
On Sat, 2006-06-03 at 10:04 +0200, Jure Varlec wrote: On Friday 02 June 2006 06:57, Ryan Tandy wrote: Multi-user mode. Only works as root, regardless of who started the screen. AFAIK suid root is enough. Using it depends on your approach to security though :) . Thanks for the tip, I didn't know screen could do that. For those interested, I had to: 1. sudo chmod u+s /usr/bin/screen 2. sudo chmod 755 /var/run/screen 3. screen -r sessionowner/[[pid.]tty[.host]] and that's it! I could use it as a simple talk, and also to see what was going on - great! -- Iain Buchanan iaindb at netspace dot net dot au Someday your prints will come. -- Kodak -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] viewing consoles remotely
Iain Buchanan wrote: 1. sudo chmod u+s /usr/bin/screen 2. sudo chmod 755 /var/run/screen 3. screen -r sessionowner/[[pid.]tty[.host]] I think the little part of me that's even slightly security-conscious just had a heart attack. It's interesting that screen -r has the desired effect, though; I could have sworn screen -x was the only method that did the simultaneous-use thing. -- gentoo-user@gentoo.org mailing list
[gentoo-user] viewing consoles remotely
Hi all, A gentoo box I have with some custom apps starts up and outputs messages from each of these apps to the consoles (ctrl-alt-F1 to ctrl-alt-F6). Is there any way of viewing this console output from a remote ssh session, or something similar? There used to be a program on QNX called ditto, which let you view and control terminals remotely. Kind of like vnc for text-consoles. I am aware of screen, but AFAIK screen can't show the buffer locally on the console as well as remotely to a user, at the same time... thanks for the tips, -- Iain Buchanan iaindb at netspace dot net dot au The end of labor is to gain leisure. -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] viewing consoles remotely
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Iain Buchanan wrote: Hi all, A gentoo box I have with some custom apps starts up and outputs messages from each of these apps to the consoles (ctrl-alt-F1 to ctrl-alt-F6). Is there any way of viewing this console output from a remote ssh session, or something similar? There used to be a program on QNX called ditto, which let you view and control terminals remotely. Kind of like vnc for text-consoles. I am aware of screen, but AFAIK screen can't show the buffer locally on the console as well as remotely to a user, at the same time... thanks for the tips, I am not quite sure if this would work but maybe showconsole is what you are looking for? % eix showconsole * app-admin/showconsole Available versions: 1.07 ~1.08 Installed: none Homepage:http://www.novell.com/linux/suse/ Description: small daemon for logging console output during boot I'm not sure if it will log messages after boot or not. - -- Jeremy Olexa ([EMAIL PROTECTED]) Office: EE/CS 1-201 CS/IT Systems Staff University of Minnesota -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEf73mFN7pD9kMi/URAvesAJsHw9v2X3rXOgNAjQ48uY8AhcUcLwCdHJb+ Sxa2Saa1lIzMecoT2tMSHMU= =xqjt -END PGP SIGNATURE- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] viewing consoles remotely
Iain Buchanan wrote: I am aware of screen, but AFAIK screen can't show the buffer locally on the console as well as remotely to a user, at the same time... thanks for the tips, # screen -x (name of screen) Multi-user mode. Only works as root, regardless of who started the screen. For your situation, assuming I've interpreted it correctly, you should get the user to SSH into your box, set their shell in /etc/passwd to /usr/bin/screen -S (something memorable) /bin/bash, and yourself run sudo screen -x (something memorable) to view it. Beware if you're trying to spy without being noticed: screen -x is interactive, so be careful what keys you hit. -- gentoo-user@gentoo.org mailing list
