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Full Discussion: Generate E-Mails with content on different files
Top Forums Shell Programming and Scripting Generate E-Mails with content on different files Post 302989067 by Corona688 on Friday 6th of January 2017 04:33:45 PM
Old 01-06-2017
Quote:
Originally Posted by Manu_H
I found another way..
How would this be (security`?)

Code:
#!/bin/bash
>tmp.txt
join -t: cleartext.txt maillist.txt | while read line
do
  echo $line
  USER=$(echo $line | awk -F: '{ print $1 }')
  PSWD=$(echo $line | awk -F: '{ print $2 }')
  EMAILID=$(echo $line | awk -F: '{ print $3 }')
  echo "Hello $(echo $USER | tr a-z A-Z), your password has been changed!!!<br>" >tmp.txt
  echo "<b>Username</b>: $USER<br>" >>tmp.txt
  echo "<b>Password</b>: $PSWD<br>" >> tmp.txt
  cat tmp.txt | mailx -s "$(echo -e 'Password Changed!!!\nContent-Type: text/html')" $EMAILID
done

USER is a special variable and should not have its value changed. Try something else, like USERID.

I think an HTML email is a bad idea as any < > & in passwords are liable to be eaten. You can work around that but it would be a lot of processing. (That's also the reason for read -r, incidentally - to prevent backslashes from being eaten.)

You don't need echo to put two lines into a variable. Just put a real newline inside the "" and it will contain a real newline, like
Code:
"Hello
World"

but again I don't think an HTML email is a good idea unless you want to get really fancy.

Most of that can be stripped down back into what I just gave you -- there's no need for all those awk's.

If your mailx supports -r, you can set the From: address. If it doesn't support -r, you can try mailx -a "From: Foo Bar <foo.bar@someplace.com>" ...

Otherwise, you may be out of luck.

Code:
join -t: cleartext.txt maillist.txt | while IFS=":" read -r USERID PSWD EMAILID
do
  echo $line
  mailx -r "my@email.com" -s "Password Changed!"  $EMAILID <<EOF
Hello $(echo $USERID | tr 'a-z' 'A-Z'), your password has been changed!
Username: $USERID
Password: $PSWD
EOF
done

Last edited by Corona688; 01-06-2017 at 06:00 PM..
 

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LEARN ABOUT FREEBSD

echo

ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME

     echo -- write arguments to the standard output

SYNOPSIS

     echo [-n] [string ...]

DESCRIPTION

     The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline ('
') character, to the
     standard output.

     The following option is available:

     -n    Do not print the trailing newline character.

     The end-of-options marker -- is not recognized and written literally.

     The newline may also be suppressed by appending 'c' to the end of the string, as is done by iBCS2 compatible systems.  Note that the -n
     option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.  For porta-
     bility, echo should only be used if the first argument does not start with a hyphen ('-') and does not contain any backslashes ('').  If
     this is not sufficient, printf(1) should be used.

     Most shells provide a builtin echo command which tends to differ from this utility in the treatment of options and backslashes.  Consult the
     builtin(1) manual page.

EXIT STATUS

     The echo utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     builtin(1), csh(1), printf(1), sh(1)

STANDARDS

     The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.

BSD
								 November 12, 2010							       BSD
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