[Klug-general] Recording a show on timer

[Mike Evans]

'at' is a command line scheduler which comes as standard with any 'nix 
style OS.  in order for it to work you will need something like 
/usr/sbin/atd running - but it almost certainly is already.  As with 
most commands you can, in a terminal window, type "man at" for the full 
details.  However in brief entering something like

at 3am tomorrow
 > type your commands at
 > the prompts here
 >Ctrl-D

(Ctrl-D is end-of-file so that terminates input)

will generate a command script scheduled to run at the time specified as 
the person you were logged in at at the time you ran it, starting in the 
directory that was the current working directory at that time.  Any 
non-redirected output or error output will normally be mailed to the 
user who initiated the job at their system mbox mailbox.  See also 
related commands atq and atrm for inspecting your scheduled jobs and 
getting rid of ones you no longer want.

To try it out do:
at now + 2 minutes
 > ls > directory-list.txt
 >Ctrl-d

If you look in the current directory there should be no file called 
directory-list.txt, but in two minutes there will be and it will contain 
the output from ls.  Simple really - and it's been around since the 1970's

Mike