[cod] Screen and su question.

Wed Jan 12 15:02:30 EST 2005

Thanx guys.. the chown works.. as expected. I will look into these
deamontools also as I don't know them and they seem interesting.

  _____  

Van: Steven Hartland [mailto:killing at multiplay.co.uk] 
Verzonden: woensdag 12 januari 2005 13:04
Aan: cod at icculus.org
Onderwerp: Re: [cod] Screen and su question.

Doesn't matter if u deleted the user or not the pts's will disappear the
instant

the users session is terminated.

    Steve / K

----- Original Message ----- 

From: Jay Vasallo <mailto:jayco1 at charter.net>  

To: cod at icculus.org 

Sent: Wednesday, January 12, 2005 3:13 AM

Subject: Re: [cod] Screen and su question.

I understand what they are. It just looked as if he was trying to get it
started. Then removed the user while he had screens with the user. Then
re-added the user and then he tried to connect to them. I have done this in
the past and always had permission errors. This is why i suggested deleting
them and starting the server again.

----- Original Message ----- 

From: Steven <mailto:killing at multiplay.co.uk>  Hartland 

To: cod at icculus.org 

Sent: Tuesday, January 11, 2005 8:56 PM

Subject: Re: [cod] Screen and su question.

I don't think you quite understand what pts's are. They are "sudo" files

they there are more like devices than files. They are created dynamically

when you login.

So sshing in as yuk will create a "terminal" pty owned by said user.

This is that sessions "screen" to all intensive purposes. When you logout

it will be "deleted".

There is no problem starting the game processes under screen using

the coduo user. The problem he's seeing is that if said screen is

created in the foreground it instantly tries to write to the "terminal"

as that device is only accessible to the yuk user this fails.

The solution as I said is to start them using -d -m which never tries to

open the "terminal". If you then subsequently want to view the screen

and you logged in as another user and su'ed, just temporally grant

that user access to that sessions "terminal" with chmod e.g.

chown coduo /dev/pts/6

    Steve / K

----- Original Message ----- 

From: Jay Vasallo <mailto:jayco1 at charter.net>  

To: cod at icculus.org 

Sent: Wednesday, January 12, 2005 12:44 AM

Subject: Re: [cod] Screen and su question.

Well he shows two users. 

Using username "yuk".

Authenticating with public key "imported-openssh-key" from agent

[yuk at yoda yuk]$ su -

Password:

[root at yoda root]# su - coduo -c screen

Cannot open your terminal '/dev/pts/6' - please check.

[root at yoda root]# ls -la /dev/pts

totaal 148

drwxr-xr-x   2 root root      0 jan 11  2005 .

drwxr-xr-x  25 root root 147456 jan 11 22:22 ..

crw--w----   1 cod  tty  136, 0 jan 11 22:58 0

crw--w----   1 yuk  tty  136, 1 jan 11 22:59 1

crw--w----   1 root tty  136, 2 jan 11 22:53 2

crw--w----   1 yuk  tty  136, 3 jan 11 22:59 3

crw-------   1 yuk  tty  136, 4 jan 11 22:59 4

crw--w----   1 yuk  tty  136, 5 jan 11 23:00 5

crw--w----   1 yuk  tty  136, 6 jan 11 23:00 6

[root at yoda root]# tty

/dev/pts/6

He is probably the one using them all with this script of his. If he is the
only one..I say delete them and start over. Screw trying to figure out why
one user can't use the other one. Have the same user start the same screen.
Looks like he did a "userdel" while he had open screens. I have done this
myself...so I say delete them, start his server. But of course everyone
wants to make a science project out of starting a simple coduo server.

----- Original Message ----- 

From: Steven <mailto:killing at multiplay.co.uk>  Hartland 

To: cod at icculus.org 

Sent: Tuesday, January 11, 2005 6:29 PM

Subject: Re: [cod] Screen and su question.

LOL

Erm dont delete them /me slaps Jay around with some skills :P

They are owned by a different user as that's the user u logged in as.

Your "terminal" is always owned by the user u log in as. This is to prevent

other people reading your "screen".

What I suspect u really want to do is to create a server under screen

to do this use -m -d e.g.

su - coduo -c "screen -m -d <server command>"

Now if u want to login like u have and reconnect to see whats happening

you will need to give said user access to your "terminal". To do this

just use chown or chmod. Once your done dont forget to either:

1. undo the permission changes

2. logout totally and then reconnect ( u get a new "terminal" ).

    Steve / K

----- Original Message ----- 

From: Jay Vasallo <mailto:jayco1 at charter.net>  

To: cod at icculus.org 

Sent: Tuesday, January 11, 2005 10:56 PM

Subject: Re: [cod] Screen and su question.

Delete them and start again.

----- Original Message ----- 

From: yuk <mailto:yuk at xs4all.nl>  

To: cod at icculus.org 

Sent: Tuesday, January 11, 2005 4:03 PM

Subject: [cod] Screen and su question.

Hi Guys,

With great joy I have read all the posts in this lists and most of the
information is very valuable! Thank you all for that.

Now, the time has come that I need some help. 

I want to use screen to monitor my server and have created a script to start
it. However, I have a problem with screen which I do not know how to solve.
It's probably something trivial, but my UNIX knowledge is not so great yet
so I am quite stuck. Below is a snip let of what I wanted to do and does not
work.

Using username "yuk".

Authenticating with public key "imported-openssh-key" from agent

[yuk at yoda yuk]$ su -

Password:

[root at yoda root]# su - coduo -c screen

Cannot open your terminal '/dev/pts/6' - please check.

[root at yoda root]# ls -la /dev/pts

totaal 148

drwxr-xr-x   2 root root      0 jan 11  2005 .

drwxr-xr-x  25 root root 147456 jan 11 22:22 ..

crw--w----   1 cod  tty  136, 0 jan 11 22:58 0

crw--w----   1 yuk  tty  136, 1 jan 11 22:59 1

crw--w----   1 root tty  136, 2 jan 11 22:53 2

crw--w----   1 yuk  tty  136, 3 jan 11 22:59 3

crw-------   1 yuk  tty  136, 4 jan 11 22:59 4

crw--w----   1 yuk  tty  136, 5 jan 11 23:00 5

crw--w----   1 yuk  tty  136, 6 jan 11 23:00 6

[root at yoda root]# tty

/dev/pts/6

In bold, you can see that the screen command fails because it cannot open
the /dev/pts/6 pseudo terminal. That is correct because that terminal is
owned by the user YUK not the user CODUO which I have su'ed to before
calling screen.

If anyone can help me out I would really appreciate it.

Kind regards,

Yuk.

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person or entity to whom it is addressed. In the event of misdirection, the
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disseminating it or any information contained in it. 

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