[comp.os.minix] Cron and At/atrun

tgcpwd@rc3.urc.tue.nl (Wim van Dorst) (07/15/90)

Hello *,

I am trying to keep my system more and more permanently running. That 
means I have to have 'cron' doing things for me. First it starts uucico
three times a day to my uucp-host for mail, which works great. Then
it start atrun every 15 minutes, which doesn't work so great (see below).
That is it, it doesn't do more, but ....

I have only a 640kB machine, with a 70 RAM disk (for /bin). Normally there
is /etc/getty (on /dev/console), /etc/update and /usr/bin/cron running.
When I do make of one or the other package nearly the whole of the ram
is used, leaving nothing for cron to run its childs in. When cron wants to
do so anyway, it either jams, but stays in RAM, or it disappears completely
from RAM. No messages either way. That is very unpleasant :-(.

Then when I run (as 'baron', no privileges) the following command sequence:
	at 0200
	ls > duck
	^D
I get in the cronlog the message "duck: cannot create", which is very
unhandy too, because I _have_ to regulate my large jobs (eg long makes 
or comic) for them not to obstruct each other or the uucp-connection
during the night.

The Questions (A bonus for the first to answer)
a. Does anyone have the same problems and what is her remedy against it?
b. Is there a more robust cron.c available or is it my own fault?
c. Is this the ways at/atrun should work or do _I_ do something wrong?

For extra info:
My wiesje.mug.hobby.nl is a 8088 8MHz IBM XT-clone with 640kB and 20MB HD.
ls for the apropriate files gives:
-rwsr-xr-x  1 root     sys         10752 Apr 29 17:49 /usr/bin/at
-rwxr-xr-x  1 bin      sys          6780 Apr 29 17:49 /usr/bin/atrun
-rwxr-xr-x  1 bin      sys         10166 Jul 14 22:59 /usr/bin/cron

         Met vriendelijke groeten, Wim 'Blue Baron' van Dorst
  ------------------------------------------------------------------
  Blue Baron = Wim van Dorst, voice (+31) 074-443937 and 02152-42319
          baron@wiesje.mug.hobby.nl and tgcpwd@urc.tue.nl
                  "This sentence have three erors."

ps. Due to some dark mystery mail to baron@wiesje.. still gets lost.

-- 
       Met vriendelijke groeten, Wim 'Blue Baron' van Dorst
   -----------------------------------------------------------
          baron@wiesje.mug.hobby.nl and tgcpwd@urc.tue.nl