I've been playing around with sending mail while in a cronjob. Here is a test
script.

WhoBeI=`hostname`
# Format to run on Raspberry Pi under raspbian
# Sendtheshhtuff="sendEmail -f mydeadcat@fakedomain.ddns.net \
-u $WhoBeI \
-s mail.fakedomain.ddns.net \
-t myname@fakedomain.ddns.net \
-o message-file=Da_message.msg"
# Format to run on openSUSE
# Sendtheshhtuff="mailx -r mydeadcat@fakedomain.ddns.net \
-s $WhoBeI \
-q Da_message.msg \
myname@fakedomain.ddns.net"
# echo "Hey, `date`" > Da_message.msg
# $Sendtheshhtuff < "."

This works.
My question is...is there a way to get rid of the < "." in the last line so that
it just says...
$Sendtheshhtuff

On 31/10/2021 at 21.54, Sidney_Kotic wrote:
> I've been playing around with sending mail while in a cronjob. Here is a test
> script.
>
> WhoBeI=`hostname`
> # Format to run on Raspberry Pi under raspbian
> #
> Sendtheshhtuff="sendEmail -f mydeadcat@fakedomain.ddns.net \
> -u $WhoBeI \
> -s mail.fakedomain.ddns.net \
> -t myname@fakedomain.ddns.net \
> -o message-file=Da_message.msg"
> # Format to run on openSUSE
> #
> Sendtheshhtuff="mailx -r mydeadcat@fakedomain.ddns.net \
> -s $WhoBeI \
> -q Da_message.msg \
> myname@fakedomain.ddns.net"
> #
> echo "Hey, `date`" > Da_message.msg
> #
> $Sendtheshhtuff < "."
>
> This works.
> My question is...is there a way to get rid of the < "." in the last
> line so that it just says...
> $Sendtheshhtuff

I don't know about sendEmail but for mailx this should work:

Sendtheshhtuff="eval mailx -r mydeadcat@fakedomain.ddns.net \
-s $WhoBeI \
myname@fakedomain.ddns.net \
< Da_message.msg"

--
mrg

On 10/31/21 2:41 PM, marrgol wrote:

> I don't know about sendEmail but for mailx this should work:

Thanks for the reply.

IIRC that does work. But it won't work for sendEmail and Raspberry pi's don't
normally have email on them apparently (none is installed by default). So I
cobbled together a couple of things to get them, I have several, to send out email.

As I said, it does work with the < "." appended. So it's more of an exercise to
get that cut off. In the real script it can produce different emails in 4
places, the less I type the better off I am.

On 31/10/2021 21.54, Sidney_Kotic wrote:
> I've been playing around with sending mail while in a cronjob.  Here is
> a test script.
>
> WhoBeI=`hostname`

....

> # Format to run on openSUSE
> #
> Sendtheshhtuff="mailx -r mydeadcat@fakedomain.ddns.net \
>                       -s $WhoBeI \
>                       -q Da_message.msg \
>                       myname@fakedomain.ddns.net"
> #
> echo "Hey, `date`" > Da_message.msg
> #
> $Sendtheshhtuff < "."
>
> This works.
> My question is...is there a way to get rid of the < "." in the last line
> so that it just says...
> $Sendtheshhtuff

I use this with the nut daemon:

echo -e "$NOTIFYTYPE\r\n\r\nUPS: $UPSNAME\r\nAlert type:
$NOTIFYTYPE\r\n\r\n`upsc $UPSNAME`" | \
mail -r from@address -s "NUT report myhostname ($NOTIFYTYPE)" \
to@address

Another method, used when I update my dyndns:

echo > /var/lib/DDNS/mailbody.txt
host $CURRENTIP >>/var/lib/DDNS/mailbody.txt
echo >> /var/lib/DDNS/mailbody.txt

echo "See attached files" | mail -r from@address -s "dns things" \
-q /var/lib/DDNS/mailbody.txt \
-a /var/lib/DDNS/router_output.log \
-a /var/lib/DDNS/router_output_err.log \
-a /var/lib/DDNS/router_output_greperr.log \
-a /var/lib/DDNS/wget_out.txt \
-a /var/lib/DDNS/wget_err.txt \
-a /var/lib/DDNS/DDNS_status \
to@address

(remember than in opensuse mailx and mail are the same program)

cer@Isengard:~> l /usr/bin/mail
lrwxrwxrwx 1 root root 5 May 16 2020 /usr/bin/mail -> mailx*
cer@Isengard:~

--
Cheers,
Carlos E.R.