On 5/16/20 4:01 PM, Ruud H.G. van Tol wrote:
On 2020-05-16 20:59, Andrey Repin wrote:
Greetings, Robert Moskowitz!
On 5/15/20 8:57 AM, Ruud H.G. van Tol wrote:
On 2020-05-15 04:26, Robert Moskowitz wrote:
Does procmail default lock the local delivery mail file
See also https://linux.die.net/man/5/procmailrc which mentions using lock files.
I am piping the output of a formail command into procmail. No receipts.
It was that man page that clued me into needing to do something about locking the access to /var/spool/mail/$USER file.
But what is the 'common' lock file name? The examples in the above mask the file which is the lock file.
Did you consider using IMAP?
What does IMAP have to do with this?
I think he did mean Maildir rather than mbox.
Thanks, indeed, I meant Maildir, oops.
Yes. I was really confused there. But I have made bigger blubbers! I considered maildir, but I cannot be assured that I will catch all local mail deliveries. I set up cron to just my script. That was 'easy'. Then I was looking at logwatch, and I see that in /etc/logwatch/conf/logwatch.conf mailer = "/usr/local/mycron" I did not add that, some process corrected logwatch automagically for me. I am not comfortable if I install some other package that does outputs to mail that it would get the change and perhaps deliver in the 'default' mbox manner. Just a little paranoia here. So I stay with mbox and have to be concerned with file locking....
The procmailrc(5) is a good read, look for lock.
Then https://linux.die.net/man/5/procmailex mentions examples of implicit lockfiles. (set VERBOSE to log more details)
Some user experience with procmail and lockfiles: https://www.techrepublic.com/article/all-the-wonders-of-procmail-part-2-lock...
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