Pop up dialog box on remote computers

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# 29  
Old 11-09-2007
But your intention is to log into the server as each of the users?

Imagine this....

1. when the user logins in CDE or Gnome will run a login script of some kind (don't know what at the moment). This needs to capture the DISPLAY variable and put it somewhere.


2. then each of the users needs in their $HOME/.ssh/authorized_keys a line which lets you run a small script (TellMe) on their behalf as them.

3. the "TellMe" script will then pull out the DISPLAY variable value from where ever it was hidden and then call your /h/test/bin/Msg, eg


export DISPLAY
/h/test/bin/Msg $@

4. You call the program using

ssh -i my_identity person@server "\"Time for bed\" said Zeberdee"

# 30  
Old 11-09-2007
sweet that worked perfect thank you very much.
# 31  
Old 11-09-2007
sorry it did not work. the code for the display works. i created a login script and it creates the info and in there it is 0.0

the i created tellme. but when i run it. It tells me what the Msg program is for and how to use it.

and the ssh i am not that familiar with

i tried this with my user that is on all machines
ssh -i sysadmin oc01@test004 "\"time for bed\" said Bob"
ssh -i sysadmin oc01 "\"time for bed\" said Bob"

none of them worked thanks though

one more thing when i sub in "test" for the $@ the pop up dialog shows on my local screen
# 32  
Old 11-09-2007
Did you

(a) set up a key pair without password using sshkeygen?

(b) add an entry into $HOME/.ssh/authorized_keys with the public key and the name of the script to run (/some/path/TellMe)

(c) pass the private key filename as the -i parameter?


Ssh Server, Limit what commands will work...

In the ".ssh/authorized_keys" file you can define a key as

command="/path/to/some/command args..." ssh-dss ...

Ensure it remains all on one line. This will force ssh to only execute the
command that was given, and NOT the command actually requested by the client.

Last edited by porter; 11-09-2007 at 04:40 AM..
# 33  
Old 11-09-2007
thanks but that is getting way to technical for what i want to do. if i figure it out i will post it here thanks for all your help.
# 34  
Old 11-09-2007
Ok here is a screen shot of me on the local client launching that application i am talking about.

see how when insert the message then click enter it will display that pop up dialog. I now need to get that application to run and display the message locally on each machine.

i am logged on as a normal user account. fyi
# 35  
Old 11-09-2007
Originally Posted by deaconf19
I now need to get that application to run and display the message locally on each machine.
.... and I suggest that you run the application as each user (using ssh)

(a) in order comply with the X security model.

(b) to get the true DISPLAY variable that the user is using

... and in order to run as each user you should use an authorized_keys entry

(a) to let you run something as that person

(b) as those people wouldn't want you running any old command on their behalf.

If you are thinking about using rsh then consider using ssh instead.
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