/ustr/sbin/mycron:
#!/bin/sh
currentDate="$(date +'%a %b %d %T %Y')"
echo "From cron@localhost "$currentDate >> /var/spool/mail/$USER
(cat; echo) >> /var/spool/mail/$USER
/etc/sysconfig/crond:
# Settings for the CRON daemon.
# CRONDARGS= : any extra command-line startup arguments for crond
CRONDARGS= -m "/usr/sbin/mycron"
And there you have your cron output going to the local mail store
without a mailer. View with mutt or other mbox viewer.
That date format is important...
Whew.
On 5/7/20 2:00 PM, Robert Moskowitz wrote:
I have dug a bit into mbox fomat and looked at one system that has
some mail in root's mbox.
It SEEMs that what I am missing is a FROM: line at the beginning that
mutt can handle. Perhaps something like:
From cron@localhost Thu May 07 13:15:01 2020
Note no colon after 'From' and a timestamp
How can I make a command to add to my script to create this? Meanwhile
I keep digging.....
thanks
On 5/7/20 1:24 PM, Robert Moskowitz wrote:
First I made a script at /usr/sbin/mycron
#!/bin/sh
(cat; echo) >> /var/spool/mail/$USER
Then I changed cat /etc/sysconfig/crond
# Settings for the CRON daemon.
# CRONDARGS= : any extra command-line startup arguments for crond
CRONDARGS= -m "/usr/sbin/mycron"
And restarted crond
Next I changed my crontab with:
15 * * * * ls /home/rgm
I know have mail waiting in /var/spool/mail/rgm, but mutt can't
process it. So I am missing something in the format of mail in
/var/spool/mail. Can someone point me to the proper format?
What I have there from the cron of that ls is:
From: "(Cron Daemon)" <rgm>
To: rgm
Subject: Cron <rgm@lx140e> ls /home/rgm
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Auto-Submitted: auto-generated
Precedence: bulk
X-Cron-Env: <XDG_SESSION_ID=266>
X-Cron-Env: <XDG_RUNTIME_DIR=/run/user/1000>
X-Cron-Env: <DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus>
X-Cron-Env: <XDG_SESSION_TYPE=unspecified>
X-Cron-Env: <XDG_SESSION_CLASS=background>
X-Cron-Env: <LANG=en_US.UTF-8>
X-Cron-Env: <SHELL=/bin/bash>
X-Cron-Env: <PATH=/sbin:/bin:/usr/sbin:/usr/bin>
X-Cron-Env: <MAILTO=rgm>
X-Cron-Env: <HOME=/home/rgm>
X-Cron-Env: <LOGNAME=rgm>
X-Cron-Env: <USER=rgm>
arm
bin
data
Desktop
Documents
Downloads
Music
odds
Pictures
Public
r
rcd
Templates
test
tftpboot
uasca
Videos
On 5/7/20 10:04 AM, Robert Moskowitz wrote:
On 5/7/20 9:25 AM, Robert Moskowitz wrote:
On 5/7/20 7:48 AM, Robert Moskowitz wrote:
On 5/6/20 11:34 PM, Cameron Simpson wrote:
On 07May2020 13:19, Cameron Simpson <cs@xxxxxxxxxx> wrote:
On 06May2020 20:20, Robert Moskowitz <rgm@xxxxxxxxxxxxxxx> wrote:
I am reading up on esmtp which comes with the base install and
seemingly no mta needed?
Anyway
https://linux.die.net/man/5/esmtprc
shows how to config for sending an email via esmtp to an mta,
but not just local delivery...
The bottom of that manual entry describes the "mta" setting, and
says that esmtp relies on a local MTA for local delivery
(addresses without an "@"). So you'll need something additional
anyway. May as well go straight to a proper MTA.
And then, to my chagrin, I reread and see it provides example
"mta" values like:
/usr/bin/procmail -d %T
So you may be good there.
Would first have to install procmail for this.
It would be interesting to find a 'simple' python script to grab
the cron output and 'make' an email and appended to the spool/mail
I am finding things about python and email that is leading me down
many roads.
First is how does CRON even send emails? The MAILTO option
triggers where to send email, but what is the how? What is CRON
using to grab its output and stuff that into what emailer program?
My digging is that CRON needs some email server installed, like
postfix, before it will send emails of its stdout. But where is
this controlled so I can change it?
Ah, looking at man crond.5:
-m This option allows you to specify a shell command
to use for
sending Cron mail output instead of using sendmail(8)
This com‐
mand must accept a fully formatted mail message
(with headers)
on standard input and send it as a mail message to
the recipi‐
ents specified in the mail headers. Specifying the
string off
(i.e., crond -m off) will disable the sending of mail.
So all I need is a script at /usr/bin/mycron
#!/bin/sh
something
something
So what do I put in the -m arg and in mycron so that this output
gets appended to /var/spool/mail/MAILTO
?
Thanks
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