The at command will execute a command or a script at a later time or date and allows for some fairly complex time specifications. Below are two examples of the at command:

1) using at to execute commands taken from stdin at 17:00 on the same day:

$ at 17:00
at> ...
at> ...
at> <EOT>
job 1 at 2009-06-22 17:00

2) using at to execute commands from a file on a June 19 at 17:00:

$ at -f myscript.sh 17:00 Jun 26
job 2 at 2009-06-26 17:00

You can also use atq to list the scheduled jobs, as follows:

$ atq
1      Mon Jun 22 17:00:00 2009 a ajones
2      Fri Jun 26 17:00:00 2009 a ajones

The atrm command allows you to remove a scheduled job:

$ atrm 1
$ atq
2      Fri Jun 26 17:00:00 2009 a ajones

Links

• Linux tip: Job scheduling with cron and at
• Linux Command Directory: at

Firstly you need to install support for the VPN protocol, which for a Cisco network meant using the following command:

$ sudo apt-get install network-manager-vpnc

Once this is installed, right click on the network icon in the system try and choose Edit Connections.

Select the VPN tab. You are then able create a new connection by choosing Add, or if you have a profile file then you can choose Import and select the file.

At this point you may need to restart the network manager, or restart your machine. Do this if you get any “no valid secrets” errors.

You should now be able connect to the VPN network by left clicking on the network icon, hovering over the VPN Connections option and choosing the profile from the list.

For more information on and instructions for other protocols look at the VPN topic on the Ubuntu Wiki.