I want to list using the "at" command.
I try this:
pedro@Pedro-PC:~$ ls -l | at 10:27 warning: commands will be executed using /bin/sh job 5 at Tue Apr 20 10:27:00 2010
But doesn't work.
Your current attempt runs the command (ls -l) and passes the resulting list of files to at. This doesn't work, because a list of files isn't a list of commands. You need to use echo.
You could also forget the pipe (and the quotes too):
The output will be mailed to you (at your local user account) after it runs.
Check your local mail (you can use