Don't you hate it when someone just tells you to read the man files?
They seem to be written for C programmers with Unix background.
Essential System Administration from O'Reilly has a pretty good
tutorial. I just got through researching crontab to set up automatic
backup on a new tape drive. (Talk about poor documentation!) Here is
what worked for me:
EDITOR=pico (or whatever you prefer)
export EDITOR
crontab -e (this creates a functional copy)
It will look something like this:
SHELL=/bin/bash
PATH=/sbin:/bin:[put your run directory here]
MAILTO=[username to send reports to]
HOME=/ (if you are running as root, else use your own, but tape tar
requires root access)
# run-parts
01 03 * * * [path to file to execute]
(this entry executes at 3:01 am every night.)
The positions are as follows:
minute hour day-of-month month weekday command
(omit username)
The command(s) you direct it to can be simple bash commands saved to
a text file. Remember to chmod the last bit on with an odd number, so
it will be recognized as executable i.e. chmod 665 (filename). My
backup program consists of two lines:
tar cvf /dev/st0 /var
tar rvf /dev/st0 /etc
which saves two directory trees to tape. To be kosher, it is supposed
to start with: #!/bin/bash but I found it worked fine without.
I can't tell you how many times I struggled with:
tar cvf /dev/nst0 because tutorials told me it would save without
rewinding. It executes as if nothing is wrong, but nothing gets
saved.
Good luck.
Now if I can just find someone who can help me get over my hurdle.
On 25 Jan 2001, at 4:56, [EMAIL PROTECTED] wrote:
> Hi,
>
> I`ve been searching for hours now so I thought I`d ask some lists I
> belong to, does anyone know of a decent CRON tutorial???
>
> TIA
> Ade
>
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John Jensen
Jensen's Directories
www.college-without-classes.com/
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