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Top Forums UNIX for Beginners Questions & Answers Sifting out mail addresses with grep and regex Post 303039336 by dr_xemacs on Tuesday 1st of October 2019 07:55:26 AM
Old 10-01-2019
Sifting out mail addresses with grep and regex

Hi there from a newbie.

So, I have this huuuge portion of mail addresses with names interlaced.. looks like:
Code:
"name1" <mail1@domain1.com>, "name2" <mail2@domain2.com> ... 

Sometimes there are no names, just mailaddress. My thought was to use regex with grep. I saved the list in file ma and tried the command
Code:
cat ma | grep -ioE \<[.*]\>

then I got no output. I fiddled around a little and gave the command
Code:
cat ma | grep -ioE \<*.\>

which resulted in a lot of "e> e> m> e> m>m>" each on a new line. So what I see here is the last character of the mail address along with the >. Not far from the wanted result but still not correct. The command doesn't make any sense to me. I'm completely puzzled! Where am I going wrong???

Please help me!
/Lasse

Last edited by RavinderSingh13; 10-01-2019 at 09:07 AM..
 

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FORWARD(5)						      BSD File Formats Manual							FORWARD(5)

NAME
forward -- mail forwarding instructions DESCRIPTION
The .forward file contains a list of mail addresses or programs that the user's mail should be redirected to. If the file is not present, then no mail forwarding will be done. Mail may also be forwarded as the standard input to a program by prefixing the line with the normal shell pipe symbol (|). If arguments are to be passed to the command, then the entire line should be enclosed in quotes. For security rea- sons, the .forward file must be owned by the user the mail is being sent to, or by root, and the user's shell must be listed in /etc/shells. For example, if a .forward file contained the following lines: nobody@FreeBSD.org "|/usr/bin/vacation nobody" Mail would be forwarded to <nobody@FreeBSD.org> and to the program /usr/bin/vacation with the single argument nobody. If a local user address is prefixed with a backslash character, mail is delivered directly to the user's mail spool file, bypassing further redirection. For example, if user chris had a .forward file containing the following lines: chris@otherhost chris One copy of mail would be forwarded to chris@otherhost and another copy would be retained as mail for local user chris. FILES
$HOME/.forward The user's forwarding instructions. SEE ALSO
aliases(5), mailaddr(7), sendmail(8) BSD
July 2, 1996 BSD
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