SUMMARY: strange crontab

From: Jiang Wei (jiang@ebu.ch)
Date: Thu Dec 19 2002 - 07:52:21 EST


As usual, I've got a lot of reponses to resolve this problem. I want to
thanks to:

Olle Eriksson
Dr Thomas.Blinn
Brusche, Johan
Deiss, Mark - special thanks for so much details ;^P
Wakeman, Lindsay
Guy Draper

Summary:
1. Those PreMRG files were left by system upgrade procedure.
2. It seems that I have 2 cron job runs at the same time, kill one of
them...

Below is my original question:

Dear Managers

We noticed that one of our Alpha Server (OSF1, V4.0) has a strange
comportement, it seems to do twice fullbackup instead of one, we look at the
crontab file, there are only one line as follow:

45 3 * * * /usr/local/bin/fullbackup.sh >/tmp/fullbackup.log 2>&1 &

The script is ok (we can start it manually, and it does what we wanna).

After a search in the file sys, we have found there are 4 files in which
contain fullbackup scripts like this:

/usr/var/spool/cron/crontabs/.proto..root
/usr/var/spool/cron/crontabs/root
/usr/var/spool/cron/crontabs/.proto..root.PreMRG
/usr/var/spool/cron/crontabs/root.PreMRG

And we could not understand why there is a root.PreMRG and
.proto..root.PreMRG? Are they useful? Can we delete them? Even if we comment
out fullbackup the line at PreMRG, but it does twice as usual. And we don't
have any "at cron" in our system.

Could anyone help us to clarify this question, Thanks in advance.

Wei Jiang
IT Services
European Broadcasting Union

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