at command not working
 

Hi
When i m trying to run at command, its not working.

The way I have done this is:
at 06:58 December 06.
at> top
at> Ctrl+D

Pls help me to solve this.

What exactly do you expect from what you are trying to do?

at runs in the background, which makes no sense for top.

I was just exercising on at command, want to know how this works. I am expecting the output of top command or any other on my screen.
If not possible, where at is basically used?

I use at like an ad hoc cron - it's great for running a script, or wget, but it runs in the background

At is commonly used for one-off commands that don't
require interaction. In other words: anything one would
use cron for if it were repeated. E.g.you want to reboot
a non mission critical machine on the weekend w/o having
to come in (except for if it doesn't come up and needs
interaction).

Thanks. it was helpful.

Check if the atd deamon has started, if not you need to start it first.

To allow a regular user to use at, you need to add your user ID
to /etc/at.allow. If /etc/at.allow doesn't exist, create it like so

echo "username" > /etc/at.allow

Just replace username with your actual user ID.

- Goodluck

Of course his problem there and then he scheduled a job
for 2 years ago ...