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Full Discussion: sendmail in script.
Top Forums UNIX for Dummies Questions & Answers sendmail in script. Post 42877 by davidg on Thursday 6th of November 2003 07:21:21 AM
Old 11-06-2003
Hi Suresh,

I had the same problem. Now after some reconfig I re-wrote an excisting script. This is what I re-use for each program that needs to mail something.
Hope you understand it a little, it's a cool one.

Regs David
Code:
#!/bin/ksh

# We have to invoke a mailer that has no escape possibilities...
#
# The only one I know of would be sendmail, but this is very ugly
# to invoke directly because we have no control of To: and
# Subject: lines...
#
# This wrapper writes some of the Header-Fields before forwarding the
# mail itself in the body
#
# usage: start-mail mailaddr subject

# you might want to change the following line to set a sepcific from: address
#sender=`/usr/bin/id|/usr/bin/sed 's/.*(\(.*\)) .*/\1/'`
sender='root@'`/usr/bin/hostname`

# it's a bad idea to use temporary files with predictable names that are
# located in a world-writable /tmp dir because other local users may create
# sym-links pointing to another file...
#
# better use a tmp-dir that is only accessible by the logsurfer user
# change the following line!
# example: TMP=/home/logsurfer
TMP=/tmp

recepient="$1"
subject="$2"
message="$3"

if [ $# -eq 0 ]; then
	echo 'usage: start-mail mailaddr subject' 1>&2
	exit 1
fi

/bin/rm -f $TMP/start-mail.$$

echo "From: $sender" > $TMP/start-mail.$$
echo "To: $recepient" | /usr/bin/tr -cd '[\040-\176]' >> $TMP/start-mail.$$
echo "" >> $TMP/start-mail.$$
if [ $# -gt 1 ]; then
	shift
	echo "Subject: $subject" | /usr/bin/tr -cd '[\040-\176]' >> $TMP/start-mail.$$
	echo "" >> $TMP/start-mail.$$
else
	echo "Subject: (no subject given - logsurfer output)" >> $TMP/start-mail.$$
fi
echo "" >> $TMP/start-mail.$$
echo "$message" | /usr/bin/tr -cd '[\040-\176]' >>/$TMP/start-mail.$$
echo "\n." >>/$TMP/start-mail.$$


cat $TMP/start-mail.$$ - | /usr/lib/sendmail -odq -t

/bin/rm -f $TMP/start-mail.$$

added code tags for readability --oombera
Last edited by oombera; 02-19-2004 at 12:20 PM..
 

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LEARN ABOUT SUNOS

mail.local

mail.local(1M)						  System Administration Commands					    mail.local(1M)

NAME

       mail.local - store mail in a mailbox

SYNOPSIS

       /usr/lib/mail.local [-f sender] [-d] recipient

DESCRIPTION

       mail.local  reads the standard input up to an end-of-file and appends it to each user's mail file (mailbox). This program is intended to be
       used by sendmail(1M) as a mail delivery agent for local mail. It is not a user interface agent.

       Messages are appended to the user's mail file in the /var/mail directory. The user must be a valid user name.

       Each delivered mail message in the mailbox is preceded by a "Unix From line" with the following format:

	      From sender_address time_stamp

       The sender_address is extracted from the SMTP envelope address (the envelope address is specified with the -f option).

       A trailing blank line is also added to the end of each message.

       The mail files are locked with a .lock file while mail is appended.

       The mail files are created with mode 660, owner is set to recipient, and group is set to mail. If the ``biff'' service is returned by  get-
       servbyname(3SOCKET),  the  biff	server	is notified of delivered mail. This program also computes the Content-Length: header which will be
       used by the mailbox reader to mark the message boundary.

OPTIONS

       The following options are supported:

       -f sender       Specifies the "envelope from address" of the message. This flag is technically optional,  but should be used.

       -d	       Specifies the recipient of the message. This flag is also optional and is supported here for backward  compatibility.  That
		       is, mail.local recipient is the same as mail.local -d recipient.

       -l	       Turn on LMTP mode.

       -r from	       Specify the sender's name (for backward compatibility).

       -7	       Do not advertise 8BITMIME support in LMTP mode.

       -b	       Return a permanent error instead of a temporary error if a mailbox exceeds quota.

OPERANDS

       The following operand is supported:

       recipient       The recipient of the mail message.

ENVIRONMENT VARIABLES

       TZ	Used to set the appropriate time zone on the timestamp.

EXIT STATUS

       The following exit values are returned:

       0	Successful operation.

       >0	An error occurred.

FILES

       /tmp/local.XXXXXX       temporary files

       /tmp/lochd.XXXXXX       temporary files

       /var/mail/user_name     user's mail file

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsndmu 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mail(1), comsat(1M), sendmail(1M), getservbyname(3SOCKET), attributes(5)

SunOS 5.10							    11 Apr 1997 						    mail.local(1M)
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