I think PxT is correct in saying that the DISPLAY variable is not set. You can set the $DISPLAY in cron, or in your srcipt / application.
If you just want some quick, simple notification, you could pop up an xterm on, say, $DISPLAY=":0", with a few lines of code:
Code:
#!/bin/sh
DISPLAY=":0"
Pay_Attention () {
echo "It is time for you to pay attention!"
echo "Press {Enter} when you are done..."
read _dummy_response
case $_dummy_response in
*) exit 0 ;;
esac
}
xterm -e Pay_Attention
exit
I'm sure there's a better way of doing that, but thats the first one that popped into my head... Heck, that as-is probably won't work, but it given you an idea of what I'm thinking, right?
Either way - the xterm will close when someone presses the enter key...
I have added a new experimental "Computer Science and Mathematics Trivia - True or False" section in the discussions, currently under the tags box.
In the future, I plan to
Expand this feature to add more trivia categories from math, science and technology.
Keep track of correct and... (20 Replies)
The UNIX and Linux Forums now has over 1000 TRUE / FALSE computer science and computer related trivia question in our database. These questions are of relatively high quality (compared to similar sites on the web) and are fun (according to feedback by users). In the first week during the... (1 Reply)
Thanks to Akshay, who helped me write the core MySQL queries, we now have two new draft leaderboards, by (1) member and by (2) country:
https://www.unix.com/trivia_stats.php
Currently milhan leads the members with a high score of 90%:
... (3 Replies)
Only a few days after I coded this new feature from scratch, we are seeing over 3000 entries in the database from members (mostly guests) playing CS trivia.
I have spend a lot of time coding this (from scratch) and testing the API. From the logs, it seems to have an API bug which appears... (31 Replies)
Just noticed that our successful computer trivia feature (stats here) has surpassed over 50,000 questions answered by users:
https://www.unix.com/trivia_stats.php
This was a coding effort worth while and I'm pleased to see so many people enjoying it in such a short time since it was released... (3 Replies)
Discussion started by: Neo
3 Replies
LEARN ABOUT REDHAT
xon
XON(1) General Commands Manual XON(1)NAME
xon - start an X program on a remote machine
SYNOPSIS
xon remote-host [-access] [-debug] [-name window-name] [-nols] [-screen screen-no] [-user user-name] [command ...]
DESCRIPTION
Xon runs the specified command (default xterm -ls) on the remote machine using rsh, remsh, or rcmd. Xon passes the DISPLAY, XAUTHORITY and
XUSERFILESEARCHPATH environment variables to the remote command.
When no command is specified, xon runs 'xterm -ls'. It additionally specifies the application name to be 'xterm-remote-host' and the win-
dow title to be '-fIremote-host'.
Xon can only work when the remote host will allow you to log in without a password, by having an entry in the .rhosts file permitting
access.
OPTIONS
Note that the options follow the remote host name (as they do with rlogin).
-access
Runs xhost locally to add the remote host to the host access list in the X server. This won't work unless xhost is given permission
to modify the access list.
-debug Normally, xon disconnects the remote process from stdin, stdout and stderr to eliminate the daemon processes which usually connect
them across the network. Specifying the -debug option leaves them connected so that error messages from the remote execution are
sent back to the originating host.
-name window-name
This specifies a different application name and window title for the default command (xterm).
-nols Normally xon passes the -ls option to the remote xterm; this option suspends that behaviour.
-screen screen-no
This changes the screen number of the DISPLAY variable passed to the remote command.
-user user-name
By default, xon simply uses rsh/remsh/rcmd to connect to the remote machine using the same user name as on the local machine. This
option cause xon to specify an alternative user name. This will not work unless you have authorization to access the remote
account, by placing an appropriate entry in the remote users .rhosts file.
BUGS
Xon can get easily confused when the remote-host, user-name or various environment variable values contain white space.
Xon has no way to send the appropriate X authorization information to the remote host.
X Version 11 Release 6.6 XON(1)
07-25-2001
