dbformmail man page

dbformmail — write a shell script that will send e-mail to many people

Synopsis

dbformmail [-m MECHANISM] format_file.txt

Description

Read a “form mail” message from the file FORMAT_FILE.TXT, filling in underscore-preceded column-names with data. Output a shell script which will send each message through some mail transport MECHANISM.

Do not use this program for evil or I will have to come over and have words with you.

Note that this program does NOT actually SEND the mail. It writes a shell script that will send the mail for you. I recommend you save it to a file, check it (one last time!), then run it with sh.

Unlike most Fsdb programs, this program does not output a FSDB file.

Options

-m MECHANISM
Select the mail-sending mechanism. Choose "Mail" or "sendmail". Defaults to "Mail".

This module also supports the standard fsdb options:

-d
Enable debugging output.
-i or --input InputSource
Read from InputSource, typically a file name, or "-" for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
-o or --output OutputDestination
Write to OutputDestination, typically a file name, or "-" for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
--autorun or --noautorun
By default, programs process automatically, but Fsdb::Filter objects in Perl do not run until you invoke the run() method. The "--(no)autorun" option controls that behavior within Perl.
--help
Show help.
--man
Show full manual.

Sample Usage

Input

#fsdb account passwd uid gid fullname homedir shell
johnh * 2274 134 John_Heidemann /home/johnh /bin/bash
greg * 2275 134 Greg_Johnson /home/greg /bin/bash
root * 0 0 Root /root /bin/bash
# this is a simple database

Sample form (in the file form.txt):

To: _account
From: the sysadmin <root>
Subject: time to change your password
Please change your password regularly.
Doesn't this message make you feel safer?

Command

cat DATA/passwd.fsdb | dbformmail form.txt >outgoing.sh

Output (in outgoing.sh)

#!/bin/sh
sendmail 'johnh' <<'END'
To: johnh
From: the sysadmin <root>
Subject: time to change your password

Please change your password regularly.
Doesn't this message make you feel safer?
END
sendmail 'greg' <<'END'
(etc.)

And to send the mail, run

sh outgoing.sh

See Also

Fsdb.

Info

2016-11-30 perl v5.24.0 User Contributed Perl Documentation